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      08-03-2013, 01:15 AM   #1
mdosu
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Tire size question

I have OEM suspension, non zcp, and I'm buying zcp wheels with tires.

Will these rear tires fit a stock non zcp car? Will the look be off?

245/35/19 front

275/30/19 rear

Stock I believe are 245/35 and 265/35
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      08-03-2013, 05:59 AM   #2
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The wheels will fit just fine. You will have 10mm more fender gap with the non-ZCP suspension. The rear tire size is WAY too small. If you want 275 in the rear, go with 275/35/19
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      08-03-2013, 07:06 AM   #3
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Quote:
Originally Posted by LarThaL View Post
The wheels will fit just fine. You will have 10mm more fender gap with the non-ZCP suspension. The rear tire size is WAY too small. If you want 275 in the rear, go with 275/35/19
Thanks, when you say small, you mean it'll look too short? Will it be that noticeable?
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      08-03-2013, 07:37 AM   #4
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Quote:
Originally Posted by LarThaL View Post
The wheels will fit just fine. You will have 10mm more fender gap with the non-ZCP suspension. The rear tire size is WAY too small. If you want 275 in the rear, go with 275/35/19
Agreed.
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      08-03-2013, 08:18 AM   #5
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Quote:
Originally Posted by mdosu View Post
Thanks, when you say small, you mean it'll look too short? Will it be that noticeable?
It will look short and is also too small from a functional standpoint. The stock configuration has an overall rear wheel/tire diameter of 668.1mm. A 275/30/19 tire would yield an overall diameter of 647.6mm. That is a reduction of 20.5mm and actually makes the rolling diameter of the rear less than that of the front.

Going to a 275/35/19 in the rear will only increase the rolling diameter by 7mm over stock. It will also reduce your visible fender gap a little. I actually think a 245/35(f) and 275/35(r) is a great way to go.
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      08-03-2013, 08:25 AM   #6
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Quote:
Originally Posted by LarThaL View Post
It will look short and is also too small from a functional standpoint. The stock configuration has an overall rear wheel/tire diameter of 668.1mm. A 275/30/19 tire would yield an overall diameter of 647.6mm. That is a reduction of 20.5mm and actually makes the rolling diameter of the rear less than that of the front.

Going to a 275/35/19 in the rear will only increase the rolling diameter by 7mm over stock. It will also reduce your visible fender gap a little. I actually think a 245/35(f) and 275/35(r) is a great way to go.
thanks, I appreciate this. The problem is, I'm buying ZCP wheels with tires, and we're doing a swap and driving home on the new wheels. So I get that I'm loosing significant overall diameter, I'm just trying to rationalize whether it'll cause serious issues, like handling issues?

I'm aware that the rears will wear faster as it'll have more revolutions per mile than stock.

so this guy, he's also using 275/30/19, although he's running square 19x10 AVG wheels,

I suppose my rear gaps would look like this?



same car, just a blue wrap:





Last edited by mdosu; 08-03-2013 at 08:32 AM.
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      08-03-2013, 09:04 AM   #7
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Ask the guy if he has had any issues with the DSC. The difference is large enough where it might be a slight issue.
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      08-03-2013, 10:05 AM   #8
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i had 265-30 in the ad08s all the way around and didnt have any extra dsc issues. i changed both the front and rear diameter but to a similar amount. not sure what changing just one end will do.
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      08-03-2013, 10:07 AM   #9
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Quote:
Originally Posted by 1MOREMOD View Post
i had 265-30 in the ad08s all the way around and didnt have any extra dsc issues. i changed both the front and rear diameter but to a similar amount. not sure what changing just one end will do.
diff explodes?
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      08-03-2013, 10:09 AM   #10
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Quote:
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diff explodes?
probably just sent you into a tree if you try to drive in the rain. your scary moment will turn into a tragic one when MDM doesnt know what to do. i would say if you do it just go do a good burnout video and put some matching ps2 in 275-35 on when your done.
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      08-03-2013, 10:10 AM   #11
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didnt you say last night the front was ps2 and rear pss?
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      08-03-2013, 10:11 AM   #12
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didnt you say last night the front was ps2 and rear pss?
yeah, i can always sell them
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      08-03-2013, 10:34 AM   #13
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275/35's may be preferred and closer to stock OD. However, 275/30's will work just fine for the time being. The look will be fine. You will not have DSC issues.

Wonder how I know? These are the exact sizes I'm running right now. I have summer wheels that I repurposed from my E46 M3 and they had these tires on 'em. When they're done, I'd probably 275/35's on but, for now, they're just fine.

Let me know if you need some pics or if you have any other questions
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      08-03-2013, 10:39 AM   #14
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Quote:
Originally Posted by gimmethemuumuu View Post
275/35's may be preferred and closer to stock OD. However, 275/30's will work just fine for the time being. The look will be fine. You will not have DSC issues.

Wonder how I know? These are the exact sizes I'm running right now. I have summer wheels that I repurposed from my E46 M3 and they had these tires on 'em. When they're done, I'd probably 275/35's on but, for now, they're just fine.

Let me know if you need some pics or if you have any other questions
thanks, pics please! (side profile) I'm assuming you're running OEM sizes up front?
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      08-03-2013, 10:43 AM   #15
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Quote:
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thanks, pics please! (side profile) I'm assuming you're running OEM sizes up front?
dont trust anything this guy says. if you send him pictures he will be at your house tomorrow stalking you. ask how i know.
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      08-03-2013, 11:52 AM   #16
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Not worth the strain on the diff.
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      08-03-2013, 11:53 AM   #17
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Not worth the strain on the diff.
it's okay, I plan on driving in a straight line!
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      08-03-2013, 12:30 PM   #18
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isnt the differential held together with popcicle sticks and duct tape all mcgyver style
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      08-03-2013, 01:21 PM   #19
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Just watch out for potholes with those rubber band rears.

A little off subject but when it comes time to replace them, consider sticking with stock sizes and go with the superb PSS. A PSS in 275 is only .2" (5mm) wider in tread width than their 265. The PSS in 265 is broad, 5mm wider tread width than the PZero in the same size which to me was meaty. Why add a couple of pounds and increased OD for .2"?
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      08-03-2013, 04:51 PM   #20
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Quote:
Originally Posted by Denk View Post
Just watch out for potholes with those rubber band rears.

A little off subject but when it comes time to replace them, consider sticking with stock sizes and go with the superb PSS. A PSS in 275 is only .2" (5mm) wider in tread width than their 265. The PSS in 265 is broad, 5mm wider tread width than the PZero in the same size which to me was meaty. Why add a couple of pounds and increased OD for .2"?
Gotta agree that the stock sized PSS do pretty well. I dumped my Contisports for PSS in stock size and it is a night and day difference. FWIW, however, the tire weight makes more of a difference in front since these are the tires that steer and take the initial hit over road surface imperfections.
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      08-03-2013, 05:19 PM   #21
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Quote:
Originally Posted by mdosu View Post
I have OEM suspension, non zcp, and I'm buying zcp wheels with tires.

Will these rear tires fit a stock non zcp car? Will the look be off?

245/35/19 front

275/30/19 rear

Stock I believe are 245/35 and 265/35
Do a 275/35 not 30
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      08-03-2013, 05:21 PM   #22
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Do a 275/35 not 30
he doesnt have a choice of tire in the sale just wanting to make it work until he gets a 35.
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