2012 Boss 302 on square 305/30/19 RE-71R's at AMP - Graham MacNeil © For better or for worse, I have heard and read so much about RE-71R's. Everyone swears by the grip but complains about the wear. Generally speaking, the pros are: 1. They grip as well or better than most R comps. 2. They don't wear as quickly as R comps if driven occasionally on the street. 3. They work better in the rain than R comps. The cons were limited to overheating quickly when used on track (being an autocross tire) and wearing too fast on heavy cars like mine. In the popular 200 TW category, they are faster than the popular Hankook RS-4's and BFGoodrich Rival S's according to published Tire Rack Tests. According to plenty of reviews, they are also faster than well established R comps like R888R's (which don't seem to work too well on heavy cars anyway) and the venerable NT01's. But I was still hesitant for a while until I talked to a tire tech support gentleman...
Okay, this isn't a car but there's a reason why I'm writing about it. It has a supercharged 1.0 litre engine makes 296 hp. 296 hp may not be too impressive in a car but one has to remember that this isn't a car. It's a bike and it weighs just 476 lb in full trim and a 90% full tank. That's a weight to power ratio of 1.6 lb/hp. I'm having a hard time wrapping my mind around that number. To put that number into perspective, a 2013 Mustang GT500 has 5.9 lb/hp. A C6 Corvette ZR1 has 5.3 lb/hp. A 2015 Porsche 918 has 4.2 lb/hp and that's with the electric motors running at full song. The insane Hennessey Venom GT with its twin-turbo LS7 7.0 litre engine has 2.2 lb/hp. I can't even begin to imagine what 1.6 lb/hp would feel like. I would also be curious about how fast you'd have to be going to be able to use that power. I used to have an 09 Cobalt SS. It had GM Stage 1 and a few bolt ons which would put it at very close to that 296 ...







