you know whats funny about you, is I dont know anything about you, but i bet i have built more mustangs/cars than you have, have more knowledge overall than you do on them, and have owned more of them yet you continue to call me an ass clown just because i said that i thought a 295 fits on a 10 inch wheel better(which it does). do us all a favor, write a book with all the vast wheel and tire info you got in that awesome brain of yours. and btw the gt500 svtpp comes with 285/35/20s in the rear on a 9.5 inch rim!!!!!!!!.....BUT WHY WOULD CARROL SHELBY GO A WHOLE 10MM WIDER ON A .5 INCH NARROWER WHEEL WHEN HE OBVIOUSLY KNOWS THAT IT IS NOT THE OPTIMAL SIZE AND PORSCHE AND ENGINEERS AND ASSHATS AND BLA BLA BLA BLA BLA. But in all seriousness, if you look at everyone of your posts in every thread you "contribute" to you are either arguing strongly why your "opinion" is the end all be all or telling someone why you dont like what they got!!!! What gives. Look we all know your a 275 on 10 inch wheel guy...we get it...its a personal preference, not drop dead fact. in the same way that i would be a 295 on 10 inch wheel guy because of personal preference. does it make sense? now appologize to carrol shelby for calling him a no good asshat who is not as smart as some dick sucking german porsche engineer.
Lol. I think you're a little confused as to how this all played out. I suggested a 275/35 for the OP and then YOU said a 275 is too small on a 10" rim. TO QUOTE YOU:
275's are too small on a 10" wheel, period." . THEN after the fact you are turning around and saying it's a personal preference and acting as if I am the one started it. LMFAO! You have it backwards, pal.
Obviously there is an acceptable range of tire sizes for a given wheel size and the choice will be made depending on the engineers or end-users goals and preferences. There a balance to strike between cornering grip, responsiveness, straight line grip, ride quality, wheel protection, looks, etc etc. Results can vary from Shelby's choice of 285's on a 20x9.5 to Porsche using 265's on an 18x10.5.
I still say a 275mm wide tire with a 35 or 40 aspect ratio (depending on the wheel diameter) will likely strike the best balance of all those considerations in the application(s) ranges we are talking about here. with 285's coming in a very close 2nd and so on. But most importantly THEY ARE NOT TOO SMALL as you claimed they were. And that is really the only point I've tried to make since you made that comment.
And just for the record, lets have a little fun with the argument summary:
Here's where it all started:
275s are too small for a ten inch wheel period...
Oh really?
And here comes wonderboy VTXfrank with some genius input
Dude, you're a fucking idiot.
The whole point that is TRYING to made here is to not make all encompassing statements when it comes to wheels and tires.
Now this is quite amusing because he is insulting me, yet agreeing with me!? Because who is the one who made the all-encompassing statement? SEE THE FIRST QUOTE ABOVE.
And here's the cherry on top right here...
I never said they were too small or wouldn't work..
BACK TO THE OP:
Reiterating, IMO a 275/35/20 is going to be perfect for you...it will give you the sidewall height you need and still have decent width. To me 295/30's still have too small of a sidewall, especially for a mustang. Now I know you said you wanted to keep same overall diameter as you currently have but as someone else mentioned, that's obviously impossible with the same wheels if you are increasing sidewall height, which you definitely should! GL with whatever you choose!