Tire size
 

CURRENTLY ,MY 1971 911 HAS P225/50R16 tires on the rear, can i replace those tires with P245/45R16.Looks like i have the room but i would feel better with other opinions
thankyou: Bucko

What size is the wheel? That will play into it too. I had 245/45/16 on my 80SC, but on 9" Fuchs, had plenty of room.

Best to have an 8 inch wheel....then if you're lucky enough to find a fresh set of 245/45s......

I ran 245-45-16 on back of my SC on 8" BBS, and it worked well (with 225/50 in front).

I eventually went back to the stock sizes because street tires in 245-45-16 dried up. Only one option and it is softer than I want in a street tire, and more expensive.

THANKS GUYS I HAVE 8 INCH WHEELS AND FOUND A FRESH SET OF TIRES ,BUT GET THIS $150.00 FOR ALL FOUR,NOT NEW BUT WAY BETTER THEN WHAT I CURRENTLY HAVE
THANKS FOR ALL YOUR INPUTSmileWavy

You know how to tell how old the tires are so you know they're not unsafe, don't you? They might not even be worth $150. You don't want to cheap out on tires.

http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=11