Ordering snow tires...need help with sizes

[plymouthcolt]

I am going to order some Blizzacks. The skinnier the tire the better so I plan on ordering 195/65-15.

Page 98 of my Carrera owners manual indicates for the front rim 6j x 5 or 7j x 15. The rear rim is one size larger (7j x 15 or 8j x 15 respectively).

I am a newbie at this so bear with me. For 911's are the rear rims always one inch larger in width?

[masraum]

For most 911's the rears are 1" larger. The most common pre-'89 sizes for rims are/were (the early cars weren't always two sizes, but I'm not sure when that changed, late 60's or early 70's)

15x6 f & 15x7 r
15x7 f & 15x8 r optional wheels
16x6 f & 16x7 r optional wheels

In '89 the standard car came with 16x6 and 16x8

Turbo's in certain years came with 16x7 and 16x9

[masraum]

PS If you take your wheels off most of the wheels that came on 911's had marks on the back side that had size indications.

I think you would be looking for something like 6j or 7j as the width.