12 inch wheels/tires
I have a small 13' TT with a dry weight of 850 lbs. On a recent trip I had some bearings burn out and the mechanic doing the replacement work commented that he was surprised that I'd made it 2500 mil...
Forum Discussion
spoon059 wrote:
12" rims? At 65 mph those things are moving, probably going 1200 RPMs. A standard 15" rim with tires is probably closer to 800 RPM. I would put the biggest wheel/tire combo that would fit under the fender if it was my trailer and I was intending to go that fast/far.
The 5.30-12" are 21.9" diameter. It comes out to just over 955 rpm. Probably a big part of why they have a maximum rated speed of 65mph. I've checked the timer temperature by touch after many stops and they've never been more than a bit warm feeling, so likely not much over 100 degrees.
I did some measuring today of clearances around the current tires and it looks like the outer wheel well is the limiting factor with about an inch to spare with the current tires. About two inches to the inner wheel well and about an two inches of clearance above the tire. Not much to work with. I'm trying to figure out if p175R80/15" will work, but I think they might reduce the critical gap to about 0.2", which isn't much.
