If you use them .. you cant be in stock class. With that said. I would perfer the Faulken rt-615 in 205/50/15. It is a stretch to get on the rim but it will fit. This lets you run the the STX class (barring any mods to the car (pulley)). As well as letting you drive both to and from the track.

 

Mugami,

Thanks for the tip. Will there be any adverse effects of running a 205 tire on the small rim?

 

Autocross with the Holey rim is fine.
Best size is 205/50-15

Best autocross street tire for the Holey rim is-
Bridgestone Potenza RE-01R in 195/50-15, costs more than the Falken Rt-615 or Hankook R2S Z212 but performs better and is suitable for street driving (no changing tires at the event) and good for wet or dry weather and is comfortable for street daily use. Only problem is it wears faster with treadwear rating of 180.

195 and 205 mm wide tires will fit the 15x5.5" holey rim with no problems and no rubbing.

Stock classes require the factory sized rims. MCS needs usually 16x6.5 or 17x7 or a JCW rim if that is what you got from the factory.

Downside to Holey rim is being narrow you don't get the full use of the wider 205mm tire. That's why I suggested the 195/50-15 RE-01R, you get less weight, it fits well, and it works nearly to the level of some R compound tires.

 

Thanks Minihune. I might just sell the hollies and get a set of 16s for autocrossing. I have 18-inch JCWs, but I am looking for a set of dedicated autocross wheels. The car has only one minor mod, so I'd prefer to run in the stock class.