Tyre Choices

[Mitt27]

Hi, I am in need of a pair of rear tyres for my 06 boxster. At the moment I have 265/40/18 on the rear, I was wondering what difference it would make replacing them with 265/35/18 rather than the 40 as there are a wider selciection of 35's available. Also I was wondering what people thought where the best tyres to purchase for the rear? Thanks

[phillipj]

Do a search.. Lots of threads on tires....

[Mitt27]

well there isnt really is there......

[Loren]

Yes there are many threads on tires.

You potential problem comes in changing the overall diameter of the tire. Porsche recommends staying within 5% of the Porsche spec. Failure to do so will cause problems with PSM and ABS systems - not to mention potential handling issues.

Have a look at Porsche's 'Approved' Tires list:

http://www.renntech.org/forums/index.php?/files/file/1627-approved-summer-tireswheels-current-cars/

[jfoxny]

Have a look at Porsche's 'Approved' Tires list:

http://www.renntech....s-current-cars/

Regarding "N-spec" tires, any idea of the number/make of tires that Porsche tests and rejects? Do only certain brands submit tires to Prosche for testing and what exactly do those tests consist of? I'd really like to understand exactly what goes into getting a tire "N-spec'ed."

Jason

[Loren]

Have a look at Porsche's 'Approved' Tires list:

http://www.renntech....s-current-cars/

Regarding "N-spec" tires, any idea of the number/make of tires that Porsche tests and rejects? Do only certain brands submit tires to Prosche for testing and what exactly do those tests consist of? I'd really like to understand exactly what goes into getting a tire "N-spec'ed."

Jason

Tires_Porsche_N_spec.pdf

[mcmike27]

M, my local tyre dealer here in the US suggested for our 98 986 the Yokohama Advan S-4 for both the front and rear. To date they have been an excellent all year all around tyre. Good tyre wear and good in most all conditions...except I dont drive it in the snow...but good in hot and cold and in between.

Good luck

[jfoxny]

Thanks for the information, Loren. I still wonder, though, how how many tires are tested and then rejected and which companies do not submit tires to Porsche for testing (if it works that way). I just bought a set of Goodyear Eagle F1 Asymmetrics and from what I've read they are very similar to the often vaunted Michelin PS2s but are not N-spec. I wonder if they were tested and rejected or just not tested? I guess I'll never know. :-)

Jason

Edited May 4, 2010 by jfoxny

[biggesthead]

I have been very impressed with the Michelin Pilot Sport PS2. With that said, why not trust that "N" and go with the approved. For me, it's a peace of mind. (Spending a few more bucks for the "N" comes with the territories of Porsche driving, unfortunately.)

Thanks for the information, Loren. I still wonder, though, how how many tires are tested and then rejected and which companies do not submit tires to Porsche for testing (if it works that way). I just bought a set of Goodyear Eagle F1 Asymmetrics and from what I've read they are very similar to the often vaunted Michelin PS2s but are not N-spec. I wonder if they were tested and rejected or just not tested? I guess I'll never know. :-)

Jason