Actually its not a huge problem,think about all the guys running 26-8-14 slicks on stock 14x5.5s,with a taller sidewall of a 15 you just run a little less psi to flatten out the contact patch.You also have to take into consideration how many guys are running 275-60-15s on 7 inch rims with sucess,Its not ideal,but it does work.--------But I:read2: see now he does have 14s lol.