Larger tire sizes on OEM 19s...

chris s · 05-20-2009, 07:58 AM

Has anyone upsized to 255/285 on OEM 19s?

If so...what sizes exactly? I want to stay as close to stock ratios as I can obviously.

foosh · 05-20-2009, 08:07 AM

255 on the front would be OK. 285 would be a bit pinched, and significantly change the sidewall. 275 would be a better choice if you want to do that.

Brianrg · 05-20-2009, 08:08 AM

+1^

lucid · 05-20-2009, 08:12 AM

I currently have 255/275 PS2s. 275s look perfect. 255s look just a little big for the rim.

SlammedR8 · 05-20-2009, 08:14 AM

http://www.m3post.com/forums/showthread.php?t=258456

What a coincidence...another member is trying to sell his 19s

chris s · 05-20-2009, 08:19 AM

Lucid...what specs exactly? 255/35 and 275/35?

My issue here is I need new tires pretty badly... The RAC GB is 4 or 5 months out...so i have to buy now. Trying to figure out if it makes more sense to upsize tires now, that i can transfer to the RACs when they come...or do i buy stock now and sell them?

lucid · 05-20-2009, 08:24 AM

Quote:

Originally Posted by chris s

Lucid...what specs exactly? 255/35 and 275/35?

My issue here is I need new tires pretty badly... The RAC GB is 4 or 5 months out...so i have to buy now. Trying to figure out if it makes more sense to upsize tires now, that i can transfer to the RACs when they come...or do i buy stock now and sell them?

I am in the exact same situation and that's why I went with the 255/35 and 275/35 setup when my tires recently wore out. Those sizes are perfectly fine on the stock 19" wheels. You won't have any problems or anything. The 255 looks just a bit too big, that's all. RAC wheels will be 9"/10" so 255/275 would be a good fit for those. You can go 255/285 or 265/285 as well. I suspect 265/285 would be OK on the stock rims, but I'd check the chart on tirerack (Michelin's recommended rim width ranges for any size tire are listed there).

foosh · 05-20-2009, 08:24 AM

I'm also buying a set of RACs. If I had to buy tires now that I intended to transfer to the RACs, I'd purchase PS2s in 255/35 and 275/35.

chris s · 05-20-2009, 08:36 AM

thanks guys... Lucid...what do you mean when you say the 255's look just a bit too big? Too tall...or too wide for the 8.5?

foosh · 05-20-2009, 08:40 AM

Chris, didn't see your name on the RAC list a bit ago. Check the thread and add your name, so we can get the ball rolling. You'd be the 20th name which is the minimum for Shep to get the development funds to Japan.

chris s · 05-20-2009, 08:44 AM

Quote:

Originally Posted by foosh

Chris, didn't see your name on the RAC list a bit ago. Check the thread and add your name, so we can get the ball rolling. You'd be the 20th name which is the minimum for Shep to get the development funds to Japan.

Done!

lucid · 05-20-2009, 09:13 AM

Quote:

Originally Posted by chris s

thanks guys... Lucid...what do you mean when you say the 255's look just a bit too big? Too tall...or too wide for the 8.5?

Check out the pics in post 900 here: http://www.m3post.com/forums/showthr...234632&page=41

The rim protector part of the tire hangs out just a bit too much in the front. That's all.

Also, as you go bigger/taller in the rear, you are changing the gearing slightly on the car. Check the rolling diamater info on tire rack.

275/35 difference to stock is 1.1%
285/35 difference to stock is 2.2%

1MOREMOD · 05-20-2009, 09:46 AM

dont we want that to correct the speedo being off by 3-4%?

lucid · 05-20-2009, 10:31 AM

The speedo is indeed off by 3.8%-6.0% between 30mph-80mph according to RRI, but any correction means you are changing the gearing slightly.

http://rri.se/popup/performancegraphs.php?ChartsID=768

rbk1115 · 05-20-2009, 12:45 PM

Would sticking with a 245/35 in the front and using a 275/35 in the rear be okay?

chris s · 05-23-2009, 07:59 PM

Quote:

Originally Posted by rbk1115

Would sticking with a 245/35 in the front and using a 275/35 in the rear be okay?

Yes...should be fine.

rbk1115 · 05-24-2009, 02:13 AM

Quote:

Originally Posted by chris s

Yes...should be fine.

Thanks!

05-20-2009, 07:58 AM	#1
chris s Major General 1250 Rep 6,912 Posts Drives: 2022 Dravit G80 M3 Join Date: Oct 2008 Location: New York iTrader: (12)	Larger tire sizes on OEM 19s... Has anyone upsized to 255/285 on OEM 19s? If so...what sizes exactly? I want to stay as close to stock ratios as I can obviously. __________________ 2022 Dravit/Fiona M3cx - Dinan midpipe w/VC, NW Carbonhaus CF, AST Springs, FC Spacers...more to come! 2016 Indi F80 M3 - SMB\|Amaro \| Mode Carbon \| ESS \| Akra EVO \| KW HAS...SOLD 2012 MR e92 M3 DCT, ESS SC, Brembo BBK, BBS FI... GONE but not forgotten! 2008 AW e92 M3 6MT, ESS SC, BBS LM's...SOLD!
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05-20-2009, 08:07 AM	#2
foosh Major 27 Rep 1,314 Posts Drives: 2008 M3 E93 Join Date: Mar 2009 Location: Annapolis, MD iTrader: (0)	255 on the front would be OK. 285 would be a bit pinched, and significantly change the sidewall. 275 would be a better choice if you want to do that. __________________
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05-20-2009, 08:08 AM	#3
Brianrg Second Lieutenant 9 Rep 254 Posts Drives: E90 M3 Join Date: Apr 2009 Location: Calgary iTrader: (0)	+1^
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05-20-2009, 08:12 AM	#4
lucid Major General 374 Rep 8,033 Posts Drives: E30 M3; Expedition Join Date: Apr 2007 Location: USA iTrader: (0)	I currently have 255/275 PS2s. 275s look perfect. 255s look just a little big for the rim. __________________
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05-20-2009, 08:14 AM	#5
SlammedR8 Major General 521 Rep 5,483 Posts Drives: 2019 X5 40i/2020 R8 V10 Spyder Join Date: Jul 2007 Location: Toronto iTrader: (2)	http://www.m3post.com/forums/showthread.php?t=258456 What a coincidence...another member is trying to sell his 19s __________________ Current: 2019 BMW X5 40i - Carbon Black/Tartufo Individual Leather 2020 Range Rover HSE - Black/Black 2020 Audi R8 V10 Performance Spyder 6MT - Ascari Blue/Black
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05-20-2009, 08:19 AM	#6
chris s Major General 1250 Rep 6,912 Posts Drives: 2022 Dravit G80 M3 Join Date: Oct 2008 Location: New York iTrader: (12)	Lucid...what specs exactly? 255/35 and 275/35? My issue here is I need new tires pretty badly... The RAC GB is 4 or 5 months out...so i have to buy now. Trying to figure out if it makes more sense to upsize tires now, that i can transfer to the RACs when they come...or do i buy stock now and sell them? __________________ 2022 Dravit/Fiona M3cx - Dinan midpipe w/VC, NW Carbonhaus CF, AST Springs, FC Spacers...more to come! 2016 Indi F80 M3 - SMB\|Amaro \| Mode Carbon \| ESS \| Akra EVO \| KW HAS...SOLD 2012 MR e92 M3 DCT, ESS SC, Brembo BBK, BBS FI... GONE but not forgotten! 2008 AW e92 M3 6MT, ESS SC, BBS LM's...SOLD!
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05-20-2009, 08:24 AM	#8
foosh Major 27 Rep 1,314 Posts Drives: 2008 M3 E93 Join Date: Mar 2009 Location: Annapolis, MD iTrader: (0)	I'm also buying a set of RACs. If I had to buy tires now that I intended to transfer to the RACs, I'd purchase PS2s in 255/35 and 275/35. __________________
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05-20-2009, 08:36 AM	#9
chris s Major General 1250 Rep 6,912 Posts Drives: 2022 Dravit G80 M3 Join Date: Oct 2008 Location: New York iTrader: (12)	thanks guys... Lucid...what do you mean when you say the 255's look just a bit too big? Too tall...or too wide for the 8.5? __________________ 2022 Dravit/Fiona M3cx - Dinan midpipe w/VC, NW Carbonhaus CF, AST Springs, FC Spacers...more to come! 2016 Indi F80 M3 - SMB\|Amaro \| Mode Carbon \| ESS \| Akra EVO \| KW HAS...SOLD 2012 MR e92 M3 DCT, ESS SC, Brembo BBK, BBS FI... GONE but not forgotten! 2008 AW e92 M3 6MT, ESS SC, BBS LM's...SOLD!
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05-20-2009, 08:40 AM	#10
foosh Major 27 Rep 1,314 Posts Drives: 2008 M3 E93 Join Date: Mar 2009 Location: Annapolis, MD iTrader: (0)	Chris, didn't see your name on the RAC list a bit ago. Check the thread and add your name, so we can get the ball rolling. You'd be the 20th name which is the minimum for Shep to get the development funds to Japan. __________________
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05-20-2009, 09:46 AM	#13
1MOREMOD - 11817 Rep 23,187 Posts Drives: Race car-> Join Date: Mar 2009 Location: check your mirrors iTrader: (5)	dont we want that to correct the speedo being off by 3-4%? __________________ 02 Tiag e46 M3\|6MT\|GC plates\|MCS c.o.\|GC bars\|GC race control arms\|GC bushings\|BW eng. & tran. mounts\|subframe kit\|BW race shifter\|BW Jaffster\|Euro header\|BW exhaust\|K&N c.a.i.\|Epic race tune\|Rouge pulleys\|Seibon CF hood\|CSL bumper\|apr gt 250 & splitter\|ST-40\|XR-2\|SS lines\|half cage\|Recaro profi\|Profi 2 harness\|BMWpedals\|BW studs\|
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05-20-2009, 10:31 AM	#14
lucid Major General 374 Rep 8,033 Posts Drives: E30 M3; Expedition Join Date: Apr 2007 Location: USA iTrader: (0)	The speedo is indeed off by 3.8%-6.0% between 30mph-80mph according to RRI, but any correction means you are changing the gearing slightly. http://rri.se/popup/performancegraphs.php?ChartsID=768 __________________
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05-20-2009, 12:45 PM	#15
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