R Compounds

[986chris]

so maybe were in agreement no r's on the street. buy new wheels and have the r's shaved? also should i reduce the wheel size to a 16" for even less mass?

[heyjae]

I would go with 17s. I don't know if you already have an S, but in case you want to upgrade your brakes, you'll likely need at least 17s. Tire choices and availability for r-compounds will be better for 17s. Plus, if you ever needed to, you can swap tires with your existing 17s. Oh, and unless you are looking for the last few tenths, I wouldn't shave the r compounds. I prefer to lose a few tenths and have tires that last a bit longer to save money.

[wconley]

I haven't had to replace my RA-1s yet but word on the street is that the R-888s don't need to be shaved like the RA-1s. They also have a stiffer sidewall than RA-1s so your effective spring rate will go up. While people generally like them more for track events, some of the racers haven't been as happy with them and everyone is struggling to find the correct tire pressures.

[rob76turbo]

I plan to replace the Yoko ES100's with the Falken Azenis RT-615 (F. 225-45-17 and R. 244-40-17). These are great street tires, fairly soft, lot's of stick and will last longer on the street than 888's. I have another set of wheels for the track and use the 888's. This will be my third set of Azenis (not all on the same car....).

[986chris]

sooo rob do those 888's make a diff in your butt while on track? and have you determined an air pressure? how about nitrogen filled? i do have an "s" love those brakes!! 17" is fine if it's only a few tenths.