Originally posted by joecycles:
I have a Datsun 510, uses 13 x6 wheels. I am of the understanding with the new wheel rule that I can up the size to 15" wheels. I understand the thinking of this but is there an advantage with the larger wheels? Second, I do not believe 15's will even fit under my car so I am better off converting the car to H-Prod (limited prep)!
I run a ITC 510, with 205-60 x 13 Kuhmo's, and have started to look at this rule. I know many people run 14 or 15 inch rims on 510's, but for street use, so fitting them is possible. Tire options is a big reason to consider this. A 205-50 X 15 Hoosier is an inch taller than a 185-60 x 13. Also, not all 205-60 13 tires are created equal, and some cause clearance problems.
For example, Hoosier's or Yokes in this (205) size won't fit, and you have to drop to 185's, but Khumo's or Goodyear or Toyo's will.
Is is going to worth the effort to buy more wheels and tryout all the variations?? Not sure yet, but I know tire availability may force us to.......

Bob