924Board.org

924-76 · Joined: 05 Jun 2006 Posts: 1489 Location: Ontario, Canada

After a quick search on the board, I just got more confuse.

I have a 76’ on the original alloy 14” and I just but 15” and I’m trying to find out the tire size I should use.
The original 14” are 185-70R14. Using a tire size calculator, a 195-60R15 has the same overall diameter but nobody seem to run those. I was planning to go with 205 but 205-55 is 1.3% smaller and the 205-60 is 2% bigger.
So, I believe smaller tire doesn’t fill the harsh as well, would accelerate faster with a slower max speed. Where a bigger tire might overfill the harsh, would accelerate slower and have a faster speed limit..???
I understand that the difference is not that big, but still is.

Is that making sense?
What tire size should I use?
What are you using?

Here the link for the tire size calculator.
http://www.1010tires.com/TireSizeCalculator.asp?action=submit

Thanks

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

I would go for the 205/55. Ride will be more harsh, though, and steering will be a bit tougher at slow speeds.
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WeiBe (1987 924S 2.5t) - 931 S3

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

I have 195/60 Yokohama's on my 6Jx15 spider webs on the 924 NA, and they look and feel great. However, I put 195/60 Kumho's on the 6Jx15 phone dials on the 924S and I did not like they way they looked...the tires looked too big for the wheels. Personally, a smaller profile like the 205/55 would probably look better.
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erstwhile owner of just about every 924 variant ever made

Cedric · Joined: 27 Aug 2004 Posts: 2826 Location: Sweden

I would go for 205/50..
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1980 924 Turbo
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924-76 · Joined: 05 Jun 2006 Posts: 1489 Location: Ontario, Canada

Thank you guys.
The rims I just but are phone dial 4 bolt, so I’ll shop for 205/55.

Ozzie · Posted: Tue Feb 24, 2009 7:49 am Post subject:

205-60 for me.
2% ?
at 60mph thats 1.2 mph faster , big deal.
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Porsche 924 1984 (UK import) NA
Its AUTO and its BLACK
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gohim · Joined: 02 Nov 2002 Posts: 4459 Location: Rialto, CA

I have 205/60s on both of my mine.

205/60 are cheaper and easier to find than 205/55.

Cars that came with 15" wheels came with 195/60s from Porsche.

Scorpio · Posted: Tue Feb 24, 2009 10:34 am Post subject: