ran a 130/70 zr with a 225 riken car tire on an 05 r3. seemed like it erased all of the ill effects of the car tire at first. it looked ridiculous. the gap at the fender was noticeable and looked goofy. the effect was dramatic. turn in was improved and the tracking improved, especially where tire ''ruts'' from heavy traffic would cause the bike to wander at low speed with a car tire. high speed was always a concern especially in the wet. high speed back roads here in new England were a blast when chasing around sport bikes. it made me think how much difference tires and their combinations really make . I had been running the car tire for about 6 years and had become numb to the car tires limitations, and was just plain tired of looking at it. so i put on a 240 bridgestone at about 1500 miles on the 130 . the 130 only lasted about 2000 miles and was toast. actually 2 or 3 months after putting the 130 on my friends were commenting how spent the tire looked. that was at roughly 1000 miles. I think the push of the big car tire tore the 130 up. the 240 130 combo ''worked'' but in my opinion was a failure as the large rear tires are just to much or a 130.i now have a Michelin 140/75 r17 with a brigestone 240/55r that I think will be great once I get my tranny figured out.good luck it really is a crap shoot/gamble I would not recommend.