Recommended wheel setup for square 245's? NASA TT5

roninsoldier83 · 04-20-2023, 09:43 AM

Hello! I just recently picked up a 2008 128i 6MT that I plan on prepping for NASA TT5. I believe the tire width restrictions for the class are 266mm measured, so it looks like most 245 wide tires will fit this bill. As such, I think I'll be running some flavor of 245's.

I don't mind rolling fenders and will be running some type of camber plates. I'm not sure what my alignment will look like (I'm assuming somewhere in the range of -2.5 degrees or more of camber?).

Basically I would like to fit the widest tires possible within the class limits, preferably on a set of wheels that will give the greatest amount of grip. My assumption is that a 245 tire would work best on a 9.5" wheel, assuming it'll still be under the 266mm limit?

Any recommendations based on experience? Specific offsets I should be looking for? Or better yet, specific wheels that are known to work well for this application? Any recommendations on diameter- 17" vs 18"? What kind of work am I going to need to run a competitive wheel/tire setup?

Any insight is greatly appreciated! Thanks in advance!

tsk94 · 04-20-2023, 11:13 AM

9" is the largest you'll manage to make work all around. This should answer any questions you have on fitment:
https://support.apexraceparts.com/hc...-Fitment-Guide

amg6975 · 04-20-2023, 12:16 PM

Can you change hubs? You'll definitely want E9x rear hubs if you can. Then you can run 17x9 et42ish all the way around with minimal spacer. Perfect for a 245 if you ask me.

Front camber will want to be more than 3 degrees negative for performance. I run -3.5F and -2.5R.

04-20-2023, 09:43 AM	#1
roninsoldier83 Second Lieutenant 56 Rep 219 Posts Drives: E82 128i 6MT / AP2 Honda S2000 Join Date: Oct 2010 Location: Denver, CO iTrader: (1)	Recommended wheel setup for square 245's? NASA TT5 Hello! I just recently picked up a 2008 128i 6MT that I plan on prepping for NASA TT5. I believe the tire width restrictions for the class are 266mm measured, so it looks like most 245 wide tires will fit this bill. As such, I think I'll be running some flavor of 245's. I don't mind rolling fenders and will be running some type of camber plates. I'm not sure what my alignment will look like (I'm assuming somewhere in the range of -2.5 degrees or more of camber?). Basically I would like to fit the widest tires possible within the class limits, preferably on a set of wheels that will give the greatest amount of grip. My assumption is that a 245 tire would work best on a 9.5" wheel, assuming it'll still be under the 266mm limit? Any recommendations based on experience? Specific offsets I should be looking for? Or better yet, specific wheels that are known to work well for this application? Any recommendations on diameter- 17" vs 18"? What kind of work am I going to need to run a competitive wheel/tire setup? Any insight is greatly appreciated! Thanks in advance! __________________ 2008 Honda S2000 (weekend/former autoX) - 1996 Acura Integra GS-R (occasional autoX) - 2008 BMW 128i 6MT (track/time attack) - 2008 Nissan Xterra (winter beater)
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04-20-2023, 11:13 AM	#2
tsk94 Lieutenant Colonel 1522 Rep 1,591 Posts Drives: E92 M3, E82 128i, F82 M4, E36 Join Date: May 2017 Location: Calgary iTrader: (2)	9" is the largest you'll manage to make work all around. This should answer any questions you have on fitment: https://support.apexraceparts.com/hc...-Fitment-Guide
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04-20-2023, 12:16 PM	#3
amg6975 Captain 500 Rep 645 Posts Drives: '12 M1.5, '05 ZHP, '98 M3/4/5 Join Date: May 2017 Location: Rochester NY iTrader: (0)	Can you change hubs? You'll definitely want E9x rear hubs if you can. Then you can run 17x9 et42ish all the way around with minimal spacer. Perfect for a 245 if you ask me. Front camber will want to be more than 3 degrees negative for performance. I run -3.5F and -2.5R.
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