Originally Posted by RobP
The Roadriders are slightly smaller than Blockleys, so don't fill the mudguard as well, but it more than makes up for that with the hendling! Plus, I run my car with out mudguards unless I know it going to be very bad weather on a long trip.

Any chance you can check the actual tire size you're using? I'm trying to figure out the rough equivalent but I'd rather go with something that I'm sure will work. I'm looking for more grip for track use so I want to try out the Roadriders in the size you're running. Thanks!