Originally Posted by GewoW
Difference is, if you plan on using this on the road...this is pretty much like a slick and will hydroplane really badly.
Also, it has VERY little tread...so I would expect faster wear than the cups no?
i dont think either one is intended for rain. althought I have been in the rain in both the PSC and the Old RA1's. both were fine. niether one has much tread depth either.