cliff96
04-24-2013, 03:13 PM
Inspired by lazyness, and not wanting to change tires at the event - I'm thinking of joining the street tire world.
By my reading of the rules, in STX the max section width allowed for RWD is a 265, and 9" rim width maximum. I'll be a little under prepped without adding an LSD, but with an alignment and DA coil-overs I should be in the ballpark.
The factory spec tire is a 225/45r17 on a 17" * 7.5" (25" diameter) or a 225/50r16 on a 16" * 7.5" (still 25" od)
Last year I ran 888's - 255/40ZR17 on a 17" * 7.5" (25.1" OD) (10.4" O-Width), but will be going with a 17*9 rim this year.
Looking at the R1R's (no 265 - so I can't max out on that) - would I be better with the shorter and slightly narrower 245's or up the OD a touch to gain an extra half inch in width?
245/40ZR17 8.0-8.5-9.5 24.7 9.8 8
255/40ZR17 8.5-9.0-10.0 25.2 10.3 8
Thanks,
Cliff
By my reading of the rules, in STX the max section width allowed for RWD is a 265, and 9" rim width maximum. I'll be a little under prepped without adding an LSD, but with an alignment and DA coil-overs I should be in the ballpark.
The factory spec tire is a 225/45r17 on a 17" * 7.5" (25" diameter) or a 225/50r16 on a 16" * 7.5" (still 25" od)
Last year I ran 888's - 255/40ZR17 on a 17" * 7.5" (25.1" OD) (10.4" O-Width), but will be going with a 17*9 rim this year.
Looking at the R1R's (no 265 - so I can't max out on that) - would I be better with the shorter and slightly narrower 245's or up the OD a touch to gain an extra half inch in width?
245/40ZR17 8.0-8.5-9.5 24.7 9.8 8
255/40ZR17 8.5-9.0-10.0 25.2 10.3 8
Thanks,
Cliff