I switched to the 40 lowpros as I foun myself hitting the track much more often and bashing tires just don't cut it at the track. I found though that bashing is barely effected using race tires so I'm just running them all the time now.

And yeah I would have done an XXL chassis conversion a long time ago if it weren't for being a proud owner of a complete hardcore racing titanium chassis. I don't think anything could separate me from it. Hehe.