Only 55, sounds like my MB-5 back in the day, I kick myself to this day for trading it away.... it would see 50-54?ish? But I was lighter...lol. I asked about the tires as in my misspent youth I used to blast around on YZ-80's....and the knobbies sucked bad on the road! Crashed a bit, but on the golf course, now there, they came into their own! ;)