Porsche Enthusiasts Club Forum

Just picked up some 8" cup 1's for the front of my 968.

Whats the ideal tyre width? I think a 225 45 17 should be ok.

Rich

Found this table a while ago which might be useful. 225's look to be spot on for 8" rims.

The columns of the table below don't align to well, so here's the link for a clearer view:

http://www.tyres-pneus-online.co.uk/equivalency-tables-advice.html

Equivalency table
Rim width Min tyre width Ideal tyre width Max tyre width
5,0 Inches 155 mm 165 or 175 mm 185 mm
5,5 Inches 165 mm 175 or 185 mm 195 mm
6,0 Inches 175 mm 185 or 195 mm 205 mm
6,5 Inches 185 mm 195 or 205 mm 215 mm
7,0 Inches 195 mm 205 or 215 mm 225 mm
7,5 Inches 205 mm 215 or 225 mm 235 mm
8,0 Inches 215 mm 225 or 235 mm 245 mm
8,5 Inches 225 mm 235 or 245 mm 255 mm
9,0 Inches 235 mm 245 or 255 mm 265 mm
9,5 Inches 245 mm 255 or 265 mm 275 mm
10,0 Inches 255 mm 265 or 275 mm 285 mm
10,5 Inches 265 mm 275 or 285 mm 295 mm
11,0 Inches 275 mm 285 or 295 mm 305 mm
11,5 Inches 285 mm 295 or 305 mm 315 mm
12,0 Inches 295 mm 305 or 315 mm 325 mm
12,5 Inches 305 mm 315 or 325 mm 335 mm

Thanks steve