Interesting... I went from 25" to 30" tires and actually lost 5 mph according to GPS (60 down to 55mph). I think due to a combination of larger diameter, heavier rolling weight, and increased wind resistance. It's a lot more hairy going that fast on big wheels and a lift. I really was just curious to know the effect of the tires on top speed.
Yeap, that can happen. Thus my comment about "if you have enough power to pull them". I would think the 900 should be the least affected......sounds like you need a clutch kit.
I expect you're right, although almost all my riding is on level ground with the occasional mudhole, and long stretches of shallow water. I don't quite have the inclination to drop $1200 on a duraclutch just yet. I may try a simple Dalton spring kit for $65. According to Dalton, in their testing on 900 XP's with larger tires they tried different weights and spring combinations and found the best results with just a simple spring swap for both clutches. Worth $65 to give it a try.
It's WAY too fast! I don't make a habit of it, but I just had to know what it would do. I did my testing on a straight flat paved backroad and buckled up for safety.
Probably should have worn a helmet...My 25" stockers were actually very stable at 60 mph... didn't feel squirrelly at all, and I could definitely feel the ECM limiting me at 60. It felt like I could go quite a bit faster without a governor. But with the Outlaw Radials (48 pounds each!), I never could hit the ECM limiter. I don't think my clutch was slipping at that speed, but I could be wrong.
