Tire Recommendations, 1979 930, Stock Fuchs

[J-P]

I’ve searched through previous info, but it is all pretty old.

Stock sizes are front 205/55 R 16, and rear 225/50 R 16.

Just wondering what folks are running these days with currently available tires, if you are running spacers, or perhaps a bigger tire to fill in some of the space.

My car is Euro ride height so just want to make sure whatever I get will not rub. Also, it is more of a driver than a show car, so I am leaning more toward a modern compound versus period-correct tread pattern, but open to ideas.

Thank you.

[zakthor]

Im very happy with the re71rs. ‘79 930 with same wheels as you though my car is lower. Just… dont even think about driving them in snow.

https://forums.pelicanparts.com/911-930-turbo-super-charging-forum/1178650-930-tires-2025-a.html

[Mr. Merk]

I think the RE71RS is still king these days. A052 is another great option.

P7 for the period look.

[J-P]

Thanks!

Looks like the RE71RS are not available in the larger 245/45-16 size for the rears, only the stock 225/50-16 size.

Any reason I shouldn't go with the larger size to get a bit more rubber on the ground, as well as fill out a bit of the empty space?

Thoughts on spacers?

[zakthor]

Originally Posted by J-P

Thanks!

Looks like the RE71RS are not available in the larger 245/45-16 size for the rears, only the stock 225/50-16 size.

Any reason I shouldn't go with the larger size to get a bit more rubber on the ground, as well as fill out a bit of the empty space?

Thoughts on spacers?

Later cars had 9” wide wheels and need the 245. Your car has 8” in back so 225 is correct. You could upsize byt it makes the tire look squished.

For performance its not simple:

https://grassrootsmotorsports.com/articles/wheel-width-is-wider-always-better/

https://www.roadandtrack.com/car-culture/buying-maintenance/a21776425/wider-tires-more-grip/

These cars already have too much understeer. Why do you need a bigger back tire?

I vote spend your money to get your suspension ‘did’ so its nice to drive - and lower it more.

[OldSpool87]

Conti DWS

[Anothray099]

For a 930, which is known for its visceral and raw driving character (including its infamous turbo lag and pendulum-like weight shift), many owners and experts prefer a tire that matches the car's original character rather than overwhelming it with ultimate modern grip.

[Mocker]

Originally Posted by Anothray099

For a 930, which is known for its visceral and raw driving character (including its infamous turbo lag and pendulum-like weight shift), many owners and experts prefer a tire that matches the car's original character rather than overwhelming it with ultimate modern grip.

Not this owner. I see no reason whatsoever to preserve the car's original frailties and limitations, especially since those were forced on Porsche, either because of emissions and other regulations, or because the technology wasn't up to modern standards.

I mean, you might as well wax poetic about the benefits of thermal reactors.

[zakthor]

Originally Posted by Mocker

Not this owner. I see no reason whatsoever to preserve the car's original frailties and limitations, especially since those were forced on Porsche, either because of emissions and other regulations, or because the technology wasn't up to modern standards.

They kind of has a point if car still has original rubber bushings and stock undersized sway and torsion bars. Even old tires can really twist up the stock suspension.

[Mocker]

My point is that there's no reason to wax poetic over things like turbo lag and lack of grip. These are negatives, not positives, and can be pretty easily rectified with modern bolt-on solutions.

BTW, your car looks killer, zakthor!

[Mr. Merk]

Originally Posted by zakthor

Later cars had 9” wide wheels and need the 245. Your car has 8” in back so 225 is correct. You could upsize byt it makes the tire look squished.

For performance its not simple:

https://grassrootsmotorsports.com/articles/wheel-width-is-wider-always-better/

https://www.roadandtrack.com/car-culture/buying-maintenance/a21776425/wider-tires-more-grip/

These cars already have too much understeer. Why do you need a bigger back tire?

I vote spend your money to get your suspension ‘did’ so its nice to drive - and lower it more.

I’m with you 100%—I always try to fit the widest wheel for a given tire size (or the skinniest tire for a given wheel).

On our 912, I run **175/70s on 15x6 wheels**.
On my Carrera, I’m running **225/45s on 16x8s** up front and **245/45s on 16x9s** in the rear.

For SCs and Carreras, I usually recommend sticking with the factory tire sizes but upgrading the wheels from **6/7s to 7/8s** for the best combination of grip and handling.