Need Tire Size Recommendation - 6SpeedOnline - Porsche Forum and Luxury Car Resource

Oct 3, 2013 | 11:09 PM

CBADtt

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From: Carlsbad, CA

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Need Tire Size Recommendation

What tire size would you run on this setup?

997tt
Michelin Pilot Super Sports
HRE S101 19x8.5 and 19x11.5

Oct 4, 2013 | 12:43 AM

kchu221

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255/35/19 in the front and 345/30/19 in the rear is what ive seen before!

Oct 4, 2013 | 08:16 AM

Tom@Champion

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Quote:

Originally Posted by CBADtt

What tire size would you run on this setup?

997tt
Michelin Pilot Super Sports
HRE S101 19x8.5 and 19x11.5

With those wheel sizes I would stick to your factory tire size. 235/35 and 305/30.

Oct 4, 2013 | 10:21 AM

swc

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Quote:

Originally Posted by Tom@Champion

With those wheel sizes I would stick to your factory tire size. 235/35 and 305/30.

+1. OEM size is way to go.

Oct 4, 2013 | 11:05 AM

CBADtt

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Cool thanks.

Oct 4, 2013 | 12:44 PM

DNugget991GT3

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oem tire size OR gt2 size 245/325

Oct 4, 2013 | 03:40 PM

jhbrennan

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Quote:

Originally Posted by Steve K ny

oem tire size OR gt2 size 245/325

GT2 is RWD so you don't want to get to aggressive with tire size differences in the AWD TT - can potentially create differential issues.

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Oct 5, 2013 | 01:17 PM

damon@tirerack

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Quote:

Originally Posted by Tom@Champion

With those wheel sizes I would stick to your factory tire size. 235/35 and 305/30.

I agree.

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Oct 5, 2013 | 11:06 PM

DNugget991GT3

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gt2 wheel sizes do not affect the awd system on a 997tt. you can absolutely do a 245/325 without any issues.

Oct 6, 2013 | 07:13 PM

#10

WaltB

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Concur with Steve. I have had no issues with 245/325 19s on my TTS.

Walt

Oct 7, 2013 | 07:37 AM

#11

Tom@Champion

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Quote:

Originally Posted by Steve K ny

gt2 wheel sizes do not affect the awd system on a 997tt. you can absolutely do a 245/325 without any issues.

Quote:

Originally Posted by Steve K ny

oem tire size OR gt2 size 245/325

This would probably be OK too. The only reason I wouldn't do this in this case is because the OP said he has 8.5 and 11.5" wheels. Depending on what tire he chooses, that extra width might actually hurt the way the car handles if there's too much sidewall.

Just one other correction though...OEM GT2 size was still a 235 front tire with a 325 rear. GT3 RS had the 245 front.