15x10 WHEELS ON A BARRACUDA

cawley said

the 17x7s have a 4 inch back spacing. I am going to sell the other pair of 17x7s & buy a pair of 17x9.5s 8 3/4 with big bolt pattern axles. Ill move the springs & or move the inner wheel tubs. Ill move the tubs fully 3inch or what ever I need. Have no idea on tire sizes for the front or rear. I don't want to run a low profile tire if I don't have to. The 17x9.5s I want to run on the back have a 5.05 back spacing.

Click to expand...

Ok, so with only a 4” backspace on the 17x7’s don’t go any bigger than 215/50/17’s up front. Those should work though.

In the back, if you want to run 17x9.5’s there’s no reason to do a 3” relocation or mini-tub, you can’t run a wide enough tire on that rim to make it worthwhile. You really don’t even need to do the 1/2” spring offset as a 275 is really about the widest you’ll be able to go, and with a 5” backspace and BBP axles a 275 should already fit.

I looked into the Nitto’s, they have a 275/40/17 in their drag radials but that isn’t a ton of sidewall, that’s a 25.6” tire. They have a 555 G2 in 275/50/17, which would be great as that’s 27.8” tall. But that’s a handling tire for modern cars, not really designed as a drag tire. There is an M&H racemaster drag radial in a 275/50/17 if you want to do that instead of a Nitto.

Honestly for what you’re describing, narrow tires up front, “street slicks”, not low profile tires you may be better staying with 15’s. I know I don’t say that much, but it really depends on use.