997 turbo wheels on 996tt
#46
Okay I switched to oem 19" 997 turbo wheels on my 996 tt in spite of the advise against it .... I ran them about 1000 miles ... They looked great ... Rode hard ... Didn't grenade my center diff ... But more importantly than all, they were Darty, and unstable at speed, due to , I guess the two drives running diff diameter wheels concurrently ... I checked and tried diff tire pressures which helped some but all in all it was a not fun or safe driving experience at speed or in the boost ....
A lot of good information in this thread, but (as I understand it) some misinformation as well.
Bottomline, the 996TT is engineered for a matched diameter (equal revs per mile F&R, or as close as you can get to it).
The 997TT is engineered for a mismatched F&R, with the rear being a taller tire.
So, putting OEM 997TT wheels on a 996TT is no biggie, but you have to switch the tires... running an OEM 997TT tire fitment on a 996TT will undoubtedly cause undue wear on the driveline, and most likely the front diff will take the brunt of it.
#47
http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=26
Read this, I think it will explain it for you.
Read this, I think it will explain it for you.
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