wheel/tire combos with sportlines

You might want to just ask for people who have lowered as much as the sportlines do. Most people run 295/30 in the rear I believe, but don't quote me on that...

Oh I agree! Spending 1500-2k$ on tires and rims is a big decision, especially when it is the only part of your car that touches the road Let me search a bit and see what info I can find...

Edit: After some searching you can run 305 out back, but the main concern is what the overall height of the tire is. ie: http://www.stangnet.com/mustang-forums/805104-biggest-rear-tires.html I don't know what the Sportlines lower the car to, but make sure you have the right sidewall hieght on the tire or you could get gashes in your tires from the wheelwells if you bottom out on a bump etc. Then again if you get the right offset and keep them just behind the edge you could get a higher sidewall ratio in there.

It looks like once you get to 285 you want to start having +40mm offsets anything above that would need more obviously. So having the correct offset would help with the side rubbing as well as maybe height rubbing as well.

So in the end you will have to decide on how wide you want to go in the rear. The fronts are definitely only 275 MAX. Anything past that and you will have rubbing!