18x9.5 +38 tire upgrade question - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

ft86me · 06-22-2013, 08:24 PM

currently have 245 40 18. can I go much wider such as 275? or would 265 be better? any experience and input would be great.

currently have whiteline camber bolts up front and cusco arms in the rear for adjustment of the camber. i'm not looking to stretch and pull and will be at a functional lowered height with my kw v3s

thanks!

empower-auto · 06-22-2013, 09:17 PM

you're already doing it wrong.

235/40, 245/35, 255/35 will work better.

now .. if you plan to race / track the car ..... that front wheel size is going to be drama. It's fine for the street but with a 235/40 on an 18x9.5 +38 front I rub brutally even with 2 degrees negative camber. it may work at stock height with stiffer suspension but not for a lowered car.

I'm gonna have to cut my fender liners out it seems

ft86me · 06-22-2013, 10:37 PM

Quote:

Originally Posted by empower-auto

you're already doing it wrong.

235/40, 245/35, 255/35 will work better.

now .. if you plan to race / track the car ..... that front wheel size is going to be drama. It's fine for the street but with a 235/40 on an 18x9.5 +38 front I rub brutally even with 2 degrees negative camber. it may work at stock height with stiffer suspension but not for a lowered car.

I'm gonna have to cut my fender liners out it seems

that's odd because i don't rub at all and already have taken it to willow. i have no fitment issues right now. i just want to go much wider since i noticed that i have lots of room. i'm also lowered on kw v3

empower-auto · 06-22-2013, 10:47 PM

Quote:

Originally Posted by ft86me

that's odd because i don't rub at all and already have taken it to willow. i have no fitment issues right now. i just want to go much wider since i noticed that i have lots of room. i'm also lowered on kw v3

how hard are you driving er?

I auto-x'd hard and really effed things up

ft86me · 06-22-2013, 11:22 PM

pretty hard man. also had a pro driver take my car to the limit since i was doing a comparison for media purposes as well

Scalzo · 06-23-2013, 01:39 AM

Sorry for jack thread,
So 18x9.5 +38 all around with 255/35/18 will fit?

Tansey86 · 06-23-2013, 02:14 AM

275 is the optimal size for a 9.5" wheel. In terms of fitment because of offset you may run into problems.

ft86me · 06-23-2013, 01:30 PM

Quote:

Originally Posted by Tansey86

275 is the optimal size for a 9.5" wheel. In terms of fitment because of offset you may run into problems.

maybe a step down to 265 would work with some camber.

Tansey86 · 06-23-2013, 01:44 PM

Quote:

Originally Posted by ft86me

maybe a step down to 265 would work with some camber.

It all depends on how low you go. At stock height a 275 will be fine, the lower you go the more you'll get natural camber and poke because of the +38. If you lower it 1.5 inches and run 2* ull be fine

ft86me · 06-23-2013, 02:06 PM

Quote:

Originally Posted by Tansey86

It all depends on how low you go. At stock height a 275 will be fine, the lower you go the more you'll get natural camber and poke because of the +38. If you lower it 1.5 inches and run 2* ull be fine

you're awesome help! i have the kw v3 right now and it's at the factory drop height it came preset with and i have no issues with my 18x9.5 (r) 18x8.5 (f) +38 245 40 18 all around no rubbing or anything. i think i'll go the route of 265 35 18 and get 9.5 up front.

Tansey86 · 06-23-2013, 02:22 PM

http://www.ft86club.com/forums/showthread.php?t=19954 - Jives car is 18x9.5 +40 square with 265/35/18's all around, hes got it dialed in to run awesome and the car looks mint. I'd discuss it further with him as he has more experience with the setup. Best of luck!

06-22-2013, 08:24 PM	#1
ft86me Senior Member Join Date: Feb 2013 Drives: 2013 FRS Location: Endor Posts: 1,231 Thanks: 802 Thanked 349 Times in 212 Posts Mentioned: 60 Post(s) Tagged: 1 Thread(s)	18x9.5 +38 tire upgrade question currently have 245 40 18. can I go much wider such as 275? or would 265 be better? any experience and input would be great. currently have whiteline camber bolts up front and cusco arms in the rear for adjustment of the camber. i'm not looking to stretch and pull and will be at a functional lowered height with my kw v3s thanks!

06-22-2013, 09:17 PM	#2
empower-auto Kouki-Monster Join Date: May 2012 Drives: 2013 Scion FR-S Location: Saskatoon, SK Posts: 1,137 Thanks: 11 Thanked 562 Times in 261 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	you're already doing it wrong. 235/40, 245/35, 255/35 will work better. now .. if you plan to race / track the car ..... that front wheel size is going to be drama. It's fine for the street but with a 235/40 on an 18x9.5 +38 front I rub brutally even with 2 degrees negative camber. it may work at stock height with stiffer suspension but not for a lowered car. I'm gonna have to cut my fender liners out it seems __________________ Rich Anderson EMPOWER AUTO

06-23-2013, 01:39 AM	#6
Scalzo Senior Member Join Date: Mar 2013 Drives: Asphalt FRS <3 Location: Canada Posts: 660 Thanks: 78 Thanked 142 Times in 102 Posts Mentioned: 5 Post(s) Tagged: 1 Thread(s)	Sorry for jack thread, So 18x9.5 +38 all around with 255/35/18 will fit? __________________ Asph. FRS Build

06-23-2013, 02:14 AM	#7
Tansey86 Senior Member Join Date: Sep 2012 Drives: 2003 Subaru Outback Location: Long Island, NY Posts: 1,318 Thanks: 154 Thanked 529 Times in 300 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	275 is the optimal size for a 9.5" wheel. In terms of fitment because of offset you may run into problems. __________________ " I know a lot about cars, man. I can look at any car's headlights and tell you exactly which way it's coming. "

06-23-2013, 02:22 PM	#11
Tansey86 Senior Member Join Date: Sep 2012 Drives: 2003 Subaru Outback Location: Long Island, NY Posts: 1,318 Thanks: 154 Thanked 529 Times in 300 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	http://www.ft86club.com/forums/showthread.php?t=19954 - Jives car is 18x9.5 +40 square with 265/35/18's all around, hes got it dialed in to run awesome and the car looks mint. I'd discuss it further with him as he has more experience with the setup. Best of luck! __________________ " I know a lot about cars, man. I can look at any car's headlights and tell you exactly which way it's coming. "

06-22-2013, 11:22 PM	#5
ft86me Senior Member Join Date: Feb 2013 Drives: 2013 FRS Location: Endor Posts: 1,231 Thanks: 802 Thanked 349 Times in 212 Posts Mentioned: 60 Post(s) Tagged: 1 Thread(s)	pretty hard man. also had a pro driver take my car to the limit since i was doing a comparison for media purposes as well

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