18' wheels and set up for track use
01-22-2007, 01:45 AM
#16
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Originally Posted by GT3 Nut
Toyo RA1 245/40-18 front and 305/35-18 rear
or was it NT-01?
01-22-2007, 01:51 AM
#17
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My advice is to contact a proven setup shop in your area. Experimenting with wheel/rubber combinations has been done several times over. The change from 19's to 18's involves more than brake clearence.
01-22-2007, 09:05 AM
#19
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Here's some info on rolling diameter:
Stock
235/35-19 25.5"...............................305/30-19 26.3"
RA1
245/40-18 25.6"...............................305/35-18 26.3
275/35-18 25.5"................................335/30-18 25.9
PSC
265/35-18" 25.2"...........................345/35-18 26.2
235/40-18" 25.4"...........................295/35-18 25.2"
....................................................315/35-18" 25.5"
Hooters
P245/35-18 24.7"...........................315/30-18 25.6"
Stock
235/35-19 25.5"...............................305/30-19 26.3"
RA1
245/40-18 25.6"...............................305/35-18 26.3
275/35-18 25.5"................................335/30-18 25.9
PSC
265/35-18" 25.2"...........................345/35-18 26.2
235/40-18" 25.4"...........................295/35-18 25.2"
....................................................315/35-18" 25.5"
Hooters
P245/35-18 24.7"...........................315/30-18 25.6"
01-22-2007, 03:59 PM
#21
Nordschleife Master
Originally Posted by mooty
i thought RA1 had 315 that will fit GT3?
or was it NT-01?
or was it NT-01?
Forgot to add, my refernce is to the 996GT3.
Last edited by LVDell; 01-22-2007 at 04:31 PM.
01-22-2007, 04:30 PM
#22
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The RA1 has the same rolling diameter as stock (997GT3).
LVDell, as for the 996, I think multiple people have been successful with the 18" RA1s. Check out posts from NJ-GT and Seth Thomas.
LVDell, as for the 996, I think multiple people have been successful with the 18" RA1s. Check out posts from NJ-GT and Seth Thomas.
01-22-2007, 04:38 PM
#23
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My choice was to use stock 997 18" carrera III's (new factory take-off from eBay $1200). Weights and observations posted here.
https://rennlist.com/forums/997-turbo-forum/311291-stock-wheels-tires-weighed.html
Just FYI, the 997GT3 rear wheels are even another 2 pounds heavier per corner than the 997TT wheels.
https://rennlist.com/forums/997-turbo-forum/311291-stock-wheels-tires-weighed.html
Just FYI, the 997GT3 rear wheels are even another 2 pounds heavier per corner than the 997TT wheels.
01-22-2007, 04:49 PM
#24
Nordschleife Master
Thanks Jeff, I have actually talked to others who tried them and found rubbing at serious compresion. The RD is larger than the 30 series enough to cause problems under heavy load/compression in the rear. There are a couple of 'listers that used them and verified this.
01-22-2007, 07:09 PM
#25
Originally Posted by AgingRacefully
Important-- if you are going to get the most out of the GT-3, get a good race shop to put an agressive allignment on it. You won't believe the improvement over the stock settings (again, a compromise by the factory to make the car more street friendly)
Have fun, Rick
