i just bought my s2 not to long ago and im looking to get some tries by friday at the latest but i dont no which size to get the car will be lowered on sk2 springs which Lowers approximately 2.0"-2.25", depending on application so i know i want something that alittle wider in the back and i dont want to roll my fenders and this car is my daily driver and this for the ap1 wheels. so if any one could help it would be great

 

205/55/16, 225/50/16

 

thats the size on there now i would like to upgrade for better handling.

 

Better handling on the track? 225/50-16 front, 245/45-16 rear.

On the street, 205/55-16 fronts, 225/50-16 rears of serious Extreme Performance or Max Performance tires will give you seriously kick-ass handling. Which is good because there aren't any bigger sizes available for street tires (none that are decent, anyway).
http://www.tirerack.com/tires/TireSe...earDiameter=16
StarSpecs or RS-3s are going to give you stellar handling in the stock AP1 sizes.
You could run 225 all around if you can deal...

Tire selection = way more important than size.

 

225/50-16 front, 245/45-16 rear on the stock wheel would be a good size for of the track is this what your telling me?
i was think about running this size but wasnt sure .

 

245/45-16 size is only available for dedicated track tires! For a DD, you're going to be going with 225/50-16s.

If you go with a 245/45-16 STREET tire, I guarantee you will have reduced grip and performance vs. 225/50-16 Dunlop StarSpecs or Hankook RS-3s.

 

Can you put 225/50-16 front, 245/45-16 rear on the stock rims? It seems like the tire would be a lot wider than the rim.

 

yeah, the stock AP1 wheels are pretty narrow. you can fit wider tires but they will bulge out past the edge of the wheels. not the greatest for performance not to mention it looks a bit funny.

 

225/50-16 fronts with 245/45-16 rears does look funny. Fronts bulge out more and are taller, making them look much beefier than the rears. More ultimate dry grip, though.

As for performance, bulging tires might not be ideal, but in stock classes where you have to run stock wheel widths, 245 Hoosiers all around has been the hot ticket for AP1s. 245/45-16 on 6.5" wide front wheels bulge a LOT! Still give more grip.

 

seems like a bit of a performance trade off with a wider tire on a narrow wheel. more rubber on the road but more sidewall deflection too. but perhaps all things considered you end up with more grip overall...