[175K911]

Originally Posted by KTL

I'd not abandon the RA-1 in favor of MPSC's. The Michelin is being discontinued for a new tire (Tire Rack recently had a very nice discount going on the MPSC), so developing your car for these would not be a good move IMO.

How can the NT-01 be based on the RA-1 if the NT-01 is not able to be flipped inside out like the RA-1? I would think once the NT-01 is shaved or worn, the tread pattern is meaningless and you should be able to flip them? Actually the tread pattern for any directional tire is only meaningful in wet conditions. Otherwise it doesn't matter if you run a directional tire "backwards."

It's the tread pattern Kevin. And only in the wet. I've really liked the NT01 as my replacement for the RA1 this season but will go back to the RA1 in a heartbeat in the spring. But I like being able to swap my front tires left to right on a daily basis at the track with the NT01, which you technically aren't supposed to do with the directional RA1. At least until either of them are shaved or worn down to 2/32.