I'm going 235, just waiting to milk the last bit off the stock rubber before, the rainy season starts here in SoCal. I would not think that a 245 would be the best choice. Here is the rationale, and I know nothing. Heat, sidewall stress, possible rubbing max turn in. I don't particularly want to put a 245 on a wheel which stock came with a 225, in the 100+ heat here in southern california, then do 120 for five miles and take a few hard turns to see if same fails. Only going +1 here, to a 235, seems a bit better match. No nothing about physics but it seems intuitive that if one trys to cram a wider tire on a wheel then excess heat will result. Well, have fun with that.