BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Wheels + Tires Sponsored by The Tire Rack
  TireRack

KEEP M3POST ALIVE BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER LINK!
Post Reply
 
Thread Tools Search this Thread
      06-14-2018, 11:37 AM   #1
Dave07997S
Brigadier General
710
Rep
3,948
Posts

Drives: 2020 Ford Mustang GT
Join Date: May 2009
Location: El Segundo, CA

iTrader: (1)

285/30/19 on the front

Hey guys my Mich PSS are going to need replacing soon. I am currently running a 275/30/19 front and 295/30/19 rear. Wheels are 19X10 and 19X11 both ET25. I am considering a 285/30/19 front and a 305/30/19 rear. Tires I am considering are the Conti ExtremeContact sport.

My concern is will a 285 fit up front, I personally do feel it will as it is only 10mm wider and will a 305 not rub out back with a ET 25 wheel. Normally I would like to see a ET31-33 out back for a 11" wide wheel with a 305.

Slicer you there bro?

Dave
__________________
2020 Ford Mustang GT 6MT PP1 444rwhp
(Sold)2013 M3 Coupe-MR/BLK ZCP, 2011 M3 Coupe-MR/Blk
2007 Porsche 997C2S Speed Yellow/Blk sport seats
2004 BMW M3 Imola/Blk
Appreciate 0
      06-14-2018, 12:12 PM   #2
so0fresh
Private First Class
United_States
47
Rep
115
Posts

Drives: BMW M3
Join Date: Feb 2017
Location: Long Beach,CA

iTrader: (0)

i think you might pull the fronts off with -3.0 or more camber up front?
Appreciate 0
      06-14-2018, 12:17 PM   #3
Dave07997S
Brigadier General
710
Rep
3,948
Posts

Drives: 2020 Ford Mustang GT
Join Date: May 2009
Location: El Segundo, CA

iTrader: (1)

Quote:
Originally Posted by so0fresh View Post
i think you might pull the fronts off with -3.0 or more camber up front?
The 275s fit with absolutely no issue. -3.0 is drastic.

Dave
__________________
2020 Ford Mustang GT 6MT PP1 444rwhp
(Sold)2013 M3 Coupe-MR/BLK ZCP, 2011 M3 Coupe-MR/Blk
2007 Porsche 997C2S Speed Yellow/Blk sport seats
2004 BMW M3 Imola/Blk
Appreciate 1
      06-14-2018, 01:27 PM   #4
ebisu8
Dom
ebisu8's Avatar
United_States
1071
Rep
1,700
Posts

Drives: Team Schirmer M2 GT
Join Date: Jan 2009
Location: Peachtree Corners, GA

iTrader: (78)

slicer Brett has 280/30-18 up front and I believe he doesn't have issues. I'll let him chime in though.
Appreciate 0
      06-14-2018, 01:53 PM   #5
Richbot
Major General
2743
Rep
5,478
Posts

Drives: Jerez Black E90
Join Date: Sep 2007
Location: STL

iTrader: (5)

Currently I am using 285/40-17 Conti square on 17x10 ET25 and have run 285/35-18 on the same dimension 18's before as well. Drop 5 in aspect ratio for two wheel sizes up and there you are, 285/30-19.

As usual the issue is tire height not width. A 285/30-18 is a very short tire at just under 25", and fits for days. A 285/35-18 works fine width wise, but rubs the back of the fender liner. due to diameter. The 19's should be a bit better because they're a bit shorter in overall diameter than the 17's, which are a full 26" and most of the 19's are 25.8-9" tall. CAmber won't help. There's tons of room to the fender, the issue is the fender liners. The Conti 285/30-19 is .3" wider than my 285/40-17's, and 0.3" shorter (same diameter as the stock 245/40-18's, actually). So you'll be fine I think.

Didn't you have tires on these wheels before? CAn't you just go out and look at them and see how they're fitting and see how much room there is, then compare specs? Or is the car already on a lift somewhere?

I think the rear might be tight. That's a bigger tire in every dimension and like you say, ET30 would be better, but you're pushing the envelope anyway so who's going to be able to tell you without you trying it out? Nobody, that's who. Do it, for science.
__________________

Last edited by Richbot; 06-14-2018 at 02:04 PM..
Appreciate 1
CSBM52695.50
      06-14-2018, 01:55 PM   #6
slowm3
Second Lieutenant
134
Rep
248
Posts

Drives: e92 m3
Join Date: Oct 2017
Location: Vancouver, BC

iTrader: (1)

285/30/19 will be a tight fit up front. Will def need a decent about of negative camber. The tire will rub on the fender liner if you're fine with that. It's 10mm wider but, it's also a bit bigger in the overall diameter.
Appreciate 0
      06-14-2018, 02:03 PM   #7
Dave07997S
Brigadier General
710
Rep
3,948
Posts

Drives: 2020 Ford Mustang GT
Join Date: May 2009
Location: El Segundo, CA

iTrader: (1)

Quote:
Originally Posted by slowm3 View Post
285/30/19 will be a tight fit up front. Will def need a decent about of negative camber. The tire will rub on the fender liner if you're fine with that. It's 10mm wider but, it's also a bit bigger in the overall diameter.
Correct, however 255/35/19s fit and those were 26" tall but on the OEM ZCP wheel which was a 9" front with a ET31. Now its a 10" wide wheel with an ET25.

Richbot, no the 275s are on the car I will go look. Thanks

I may just stay with the Mich PS4s and do the 275/295 setup again.
__________________
2020 Ford Mustang GT 6MT PP1 444rwhp
(Sold)2013 M3 Coupe-MR/BLK ZCP, 2011 M3 Coupe-MR/Blk
2007 Porsche 997C2S Speed Yellow/Blk sport seats
2004 BMW M3 Imola/Blk
Appreciate 0
      06-14-2018, 02:10 PM   #8
Richbot
Major General
2743
Rep
5,478
Posts

Drives: Jerez Black E90
Join Date: Sep 2007
Location: STL

iTrader: (5)

I would just do the PS4S if I were you. I love the contis and all, but the ET25 in back means a 305 might be too much of a compromise
__________________
Appreciate 0
      06-14-2018, 02:47 PM   #9
Dave07997S
Brigadier General
710
Rep
3,948
Posts

Drives: 2020 Ford Mustang GT
Join Date: May 2009
Location: El Segundo, CA

iTrader: (1)

Quote:
Originally Posted by Richbot View Post
I would just do the PS4S if I were you. I love the contis and all, but the ET25 in back means a 305 might be too much of a compromise
Yea I think you are right...no rubbing with the 295s why push your luck. Contis are a great tire for the money.

Dave
__________________
2020 Ford Mustang GT 6MT PP1 444rwhp
(Sold)2013 M3 Coupe-MR/BLK ZCP, 2011 M3 Coupe-MR/Blk
2007 Porsche 997C2S Speed Yellow/Blk sport seats
2004 BMW M3 Imola/Blk
Appreciate 0
      06-14-2018, 10:29 PM   #10
slicer
Major General
slicer's Avatar
2733
Rep
6,732
Posts

Drives: 'E46 M3 Race Car, '23 X7
Join Date: Jan 2009
Location: Wisconsin - Instagram - @slicer_m

iTrader: (39)

Here I am! haha.

I would definitely stick with 275/295 PS4's if it were me. 295 is the widest that will fit with 11 et25 in my experience. I would want 11 et31 +/- for a 305. In the front I have never attempted a 285/30/19 but I am currently running 285/30/18 on 10 et15 without any issues (I also have -3.5 camber).
__________________
'23 X7
'04 M3 - Fall Line Motorsports Built Race Car - S65 swap, Dry Sump, Bosch Stand-Alone ECU, Drenth Sequential Trans, MCS 3-Way, Flossmann Wide Body, Brembo Motorsports Brakes, Drexler LSD, BBS E88 Etc.
INSTAGRAM - @Slicer_M
Appreciate 1
CSBM52695.50
      06-15-2018, 10:16 AM   #11
Dave07997S
Brigadier General
710
Rep
3,948
Posts

Drives: 2020 Ford Mustang GT
Join Date: May 2009
Location: El Segundo, CA

iTrader: (1)

Quote:
Originally Posted by slicer View Post
Here I am! haha.

I would definitely stick with 275/295 PS4's if it were me. 295 is the widest that will fit with 11 et25 in my experience. I would want 11 et31 +/- for a 305. In the front I have never attempted a 285/30/19 but I am currently running 285/30/18 on 10 et15 without any issues (I also have -3.5 camber).
You're like a Genie, rub the bottle and you show up .

Yea, now that I think about it the issue isn't going to be the fronts but the rears. I also felt it would be a ET31-33 for a 305 tire.

Thanks

Dave
__________________
2020 Ford Mustang GT 6MT PP1 444rwhp
(Sold)2013 M3 Coupe-MR/BLK ZCP, 2011 M3 Coupe-MR/Blk
2007 Porsche 997C2S Speed Yellow/Blk sport seats
2004 BMW M3 Imola/Blk
Appreciate 0
      06-15-2018, 10:32 AM   #12
tdott
Brigadier General
3932
Rep
3,972
Posts

Drives: M3
Join Date: Nov 2010
Location: South FL / 6ix

iTrader: (4)

285/30/19 with the right offset will clear the fender.

There may be some rubbing at lock, I ran 285/35/18 18x10 et25 with just slight rubbing at lock behind the front wheels, I made some room and it went away.
If you are really low, there will be some rubbing at the bumper tap, which can be trimmed off.

Goodluck, i'd go for it.


For rear, 305/30/19 19x11 et25 will rub unless height is super high and camber arms are changed to give more than factory adjustment negative camber.

Last edited by tdott; 06-15-2018 at 10:38 AM..
Appreciate 0
      06-15-2018, 01:10 PM   #13
slicer
Major General
slicer's Avatar
2733
Rep
6,732
Posts

Drives: 'E46 M3 Race Car, '23 X7
Join Date: Jan 2009
Location: Wisconsin - Instagram - @slicer_m

iTrader: (39)

Quote:
Originally Posted by Dave07997S View Post
Quote:
Originally Posted by slicer View Post
Here I am! haha.

I would definitely stick with 275/295 PS4's if it were me. 295 is the widest that will fit with 11 et25 in my experience. I would want 11 et31 +/- for a 305. In the front I have never attempted a 285/30/19 but I am currently running 285/30/18 on 10 et15 without any issues (I also have -3.5 camber).
You're like a Genie, rub the bottle and you show up .

Yea, now that I think about it the issue isn't going to be the fronts but the rears. I also felt it would be a ET31-33 for a 305 tire.

Thanks

Dave
Haha - that's right

The other comment I would add is that I would prefer a 10.5 wide wheel with a 285. 10" is not bad and within the recommended wheel width range for a 285 but I think they would perform better with a 10.5. I will likely experiment with a 10.5 in the future but my coilovers reduce inner clearance so it might be a challenge on my car
__________________
'23 X7
'04 M3 - Fall Line Motorsports Built Race Car - S65 swap, Dry Sump, Bosch Stand-Alone ECU, Drenth Sequential Trans, MCS 3-Way, Flossmann Wide Body, Brembo Motorsports Brakes, Drexler LSD, BBS E88 Etc.
INSTAGRAM - @Slicer_M
Appreciate 0
      06-15-2018, 01:16 PM   #14
Richbot
Major General
2743
Rep
5,478
Posts

Drives: Jerez Black E90
Join Date: Sep 2007
Location: STL

iTrader: (5)

I think that's true. 10 if you park curbside a lot, 10.5 if you don't
__________________
Appreciate 1
CSBM52695.50
      06-16-2018, 05:05 PM   #15
slicer
Major General
slicer's Avatar
2733
Rep
6,732
Posts

Drives: 'E46 M3 Race Car, '23 X7
Join Date: Jan 2009
Location: Wisconsin - Instagram - @slicer_m

iTrader: (39)

Quote:
Originally Posted by Richbot View Post
I think that's true. 10 if you park curbside a lot, 10.5 if you don't
Definitely!
__________________
'23 X7
'04 M3 - Fall Line Motorsports Built Race Car - S65 swap, Dry Sump, Bosch Stand-Alone ECU, Drenth Sequential Trans, MCS 3-Way, Flossmann Wide Body, Brembo Motorsports Brakes, Drexler LSD, BBS E88 Etc.
INSTAGRAM - @Slicer_M
Appreciate 0
      06-19-2018, 02:17 PM   #16
Dave07997S
Brigadier General
710
Rep
3,948
Posts

Drives: 2020 Ford Mustang GT
Join Date: May 2009
Location: El Segundo, CA

iTrader: (1)

A 285 on a 10" wheel is more than supported. In fact TireRack shows measured dimensions are on a 10" wheel. A 9.5" wheel I would agree, that is the minimum recommended wheel width for a 285 tire.

Dave
__________________
2020 Ford Mustang GT 6MT PP1 444rwhp
(Sold)2013 M3 Coupe-MR/BLK ZCP, 2011 M3 Coupe-MR/Blk
2007 Porsche 997C2S Speed Yellow/Blk sport seats
2004 BMW M3 Imola/Blk
Appreciate 0
      06-20-2018, 10:17 AM   #17
slicer
Major General
slicer's Avatar
2733
Rep
6,732
Posts

Drives: 'E46 M3 Race Car, '23 X7
Join Date: Jan 2009
Location: Wisconsin - Instagram - @slicer_m

iTrader: (39)

Quote:
Originally Posted by Dave07997S View Post
A 285 on a 10" wheel is more than supported. In fact TireRack shows measured dimensions are on a 10" wheel. A 9.5" wheel I would agree, that is the minimum recommended wheel width for a 285 tire.

Dave
It is acceptable but I think a 10.5 would be better (my opinion is base on my Cup2 Tires which seem to run a little wider than a PSS or other pure street Tires). I also prefer the 295 cup2 on an 11" wheel for the same reason.
__________________
'23 X7
'04 M3 - Fall Line Motorsports Built Race Car - S65 swap, Dry Sump, Bosch Stand-Alone ECU, Drenth Sequential Trans, MCS 3-Way, Flossmann Wide Body, Brembo Motorsports Brakes, Drexler LSD, BBS E88 Etc.
INSTAGRAM - @Slicer_M
Appreciate 0
      06-20-2018, 12:15 PM   #18
Richbot
Major General
2743
Rep
5,478
Posts

Drives: Jerez Black E90
Join Date: Sep 2007
Location: STL

iTrader: (5)

There's a kernel of truth in every joke, including stancified stretched tires.

If you can only fit a 23" tall 205 under the car, but you can fit a 9" wheel, the 9" wheel will in general give you better performance than an 8" wheel than a 7" wheel. Sidewall is asked to do less of the work of just keeping the tire shape, you can run lower pressure which puts more rubber on the road...yada

Soooo for places where you're limited in tire but not wheel size for some reason, a wider wheel makes the same tire work better, all things being equal until you're in the range of +1-1.5" more wheel width than section width

For instance, if I was running in SCCA STU, which IIRC still limits RWD cars to 285 section width but doesn't limit wheel width, I'd try to get an 11 under my 285's.

But rim protection is a real thing and curbing wheels sucks ass so I'd stick with a 10 for a street car
__________________
Appreciate 0
      06-20-2018, 02:26 PM   #19
slicer
Major General
slicer's Avatar
2733
Rep
6,732
Posts

Drives: 'E46 M3 Race Car, '23 X7
Join Date: Jan 2009
Location: Wisconsin - Instagram - @slicer_m

iTrader: (39)

Quote:
Originally Posted by Richbot View Post
There's a kernel of truth in every joke, including stancified stretched tires.

If you can only fit a 23" tall 205 under the car, but you can fit a 9" wheel, the 9" wheel will in general give you better performance than an 8" wheel than a 7" wheel. Sidewall is asked to do less of the work of just keeping the tire shape, you can run lower pressure which puts more rubber on the road...yada

Soooo for places where you're limited in tire but not wheel size for some reason, a wider wheel makes the same tire work better, all things being equal until you're in the range of +1-1.5" more wheel width than section width

For instance, if I was running in SCCA STU, which IIRC still limits RWD cars to 285 section width but doesn't limit wheel width, I'd try to get an 11 under my 285's.

But rim protection is a real thing and curbing wheels sucks ass so I'd stick with a 10 for a street car
Good info. That was the point I was trying to make but I was too lazy to write it
__________________
'23 X7
'04 M3 - Fall Line Motorsports Built Race Car - S65 swap, Dry Sump, Bosch Stand-Alone ECU, Drenth Sequential Trans, MCS 3-Way, Flossmann Wide Body, Brembo Motorsports Brakes, Drexler LSD, BBS E88 Etc.
INSTAGRAM - @Slicer_M
Appreciate 0
      11-04-2018, 08:58 PM   #20
BayE30
Lieutenant Colonel
United_States
1341
Rep
1,881
Posts

Drives: 2011.75 E90 M3 ZCP
Join Date: Jul 2014
Location: San Francisco

iTrader: (5)

ressurecting this thread, did OP ever run the 285/30/19 on the 19x10 et25? i am considering 285/30/19 square on my 19x10 et25 square ZCP wheel setup. curious if there are fitment issues up front.
Appreciate 0
      11-04-2018, 09:51 PM   #21
Dave07997S
Brigadier General
710
Rep
3,948
Posts

Drives: 2020 Ford Mustang GT
Join Date: May 2009
Location: El Segundo, CA

iTrader: (1)

No, keeping current setup
Appreciate 0
      11-04-2018, 09:55 PM   #22
shimmy23
F15 daddymobile
shimmy23's Avatar
2330
Rep
3,496
Posts

Drives: GS X5
Join Date: Aug 2011
Location: WA

iTrader: (3)

Quote:
Originally Posted by SFCM3 View Post
ressurecting this thread, did OP ever run the 285/30/19 on the 19x10 et25? i am considering 285/30/19 square on my 19x10 et25 square ZCP wheel setup. curious if there are fitment issues up front.
whats the point of doing this? running such a wide tire in the front... let alone on a 19" and squared. it will tramline like crazy.
__________________
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 01:59 AM.




m3post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST