R888's are 5/32 wider than RA1's on the same 9 in wheel and same pressure. Measured with wheel not on car, re not loaded. FMR
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R888's are 5/32 wider than RA1's on the same 9 in wheel and same pressure. Measured with wheel not on car, re not loaded. FMR
Frank, GREAT info. Any chance you can bring that set to ECR? Seems you are the ONLY guy in the US of A in AI that has mounted and run on the R888's.Quote:
Originally Posted by cobra132
It would be outstanding if we could NASA TX to allow a few extra "test sessions" so we can give some input to National AI directors about the tire and such. Also, if anyone has a 9.5" rim, we need to mount and measure the width compared to an RA1. Apparently again, we are the only ones even close to doing this and figuring out our problem with track width for next year.
So far, between the data Frank has given, Bud and several other reviews about the tires "walking around a lot", it sounds like the R888 is more of a "balloon" type tire requiring a ton more air pressure, or wider wheel as it has a softer and pinched sidewall. This is going to affect spring rates and shock valving too... :cry:
Anyone who has a portable Data Aquisition, it would be great to bring it to the track and do some testing if Frank is cool with being the test bed!