Wheel and Tire Forum
Sponsored by:
Sponsored by:

need advice on 17" cup wheels with 225 tires

Old 09-17-2002, 02:11 AM
Henry in SD
New User
Thread Starter
Join Date: Jun 2001
Posts: 3
Post need advice on 17" cup wheels with 225 tires

This topic is probably discussed quite a bit already but I just can't find the right combination of answers that I'm looking for.

Currently my 95' 993 has F-205/R-255 mounted on 7" and 9" by 17" cup wheels with lowered ROW M030 suspension and larger diameter sway bars. To dial out the inherent understeer I was told that 225 width tire on the front 7" wheel would fit ok. I recall some other recommendation that mentions using 225 would create too much flex (buldge) on the tire so that the side wall would be less stiff. I've also heard that the sharpness in steering response may lower due to the wider tire. Going to 7.5" or 8" wheel would probably solve the problem, but if I didn't want to spend more on new wheels which is the better way to go, 205 or 225 (with 255 in the rear)?
Henry in SD is offline  
Old 09-17-2002, 04:05 AM
Super User
Danno's Avatar
Join Date: Jul 2001
Location: Santa Barbara, CA
Posts: 14,077
Thumbs up

Nah, don't worry about it. A 225mm tire on 7" rim, while not as optimal as on an 8" rim, will still be better than a 205mm on 7" rim...
Danno is offline  
Old 09-17-2002, 10:28 PM
Join Date: Mar 2002
Location: Redondo Beach, CA
Posts: 587

It made improvements for me (with Kuhmo Victoracers though, which have a stiffer side wall). Are you going performance tire or "get around town" tires? I put a cheap Kuhmo street tire on for inbetween races, there's no bulge at all.

Good Luck,
PeanutinCA is offline  
Old 09-18-2002, 02:28 AM
Henry in SD
New User
Thread Starter
Join Date: Jun 2001
Posts: 3

Thanks for the suggestions. I actually have two sets of 17" cup wheels. I was planning to use one set for track and the other for street. Kumho VR are one of my choices for the track tires and I was also thinking of the S-03's for the streets. Now I'm leaning more towards the 225 in both applications.
Henry in SD is offline  
Old 09-18-2002, 01:22 PM
Tom W
Rennlist Member

Tom W's Avatar
Join Date: Jul 2001
Location: Santa Rosa, CA
Posts: 4,482

I have 205/255 (F/R) SO3's on my street wheels because I was worried about fit. I finally went to 225/275 Kuhmo Ecsta V700 on my alternate wheels and have had no problems (this is with the 7" and 9" cup wheels on a narrow body '95 993). The difference in performance on an autox course is striking (SO3 vs V700).
Tom W is offline  
Old 09-19-2002, 06:09 AM
Lifetime Rennlist
DJF1's Avatar
Join Date: Dec 2001
Location: Burlington CANADA
Posts: 7,005

I have the 17 cups on my 95 and went with 225/45 and 255/40 with street tires so I can dial out some understeer which the combo did!. Two DE's later no issues whatsoever! Would not go back to 205's anymore.
DJF1 is offline  

Thread Tools
Search this Thread

Contact Us - About Us - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: