Bringing this thread back to life. Wondering if Gus or anyone else has successfully used the MT 295 65 15 fit in 63-65 B-Body, with stock rear wheel wells and stock leaf spring location. Photos would be awesome.

I spent over an hour trying to find pics with no luck, but a 295/65/15 BFG Drag Radial on a 15x8 wheel with 4.5" backspace physically fit our '64 Savoy with stock location leafs, but it would not have been very driveable. The tire would have rubbed on the inner quarter panel above the wheel lips with any moderate suspension movement. I'll post pics if I run across them.

With that said, I believe the M/T ET Streets do not bulge as much as the BFGs did. (I mocked it up around 10yrs ago...when BFG's were the only ones widely available with that size.)

Found a few mock-up pics. Plenty of spring clearance, but I do not recall the inner wheel tub clearance anymore.

Please disregard the fact the tire is not in the correct direction...it was simply to see if they would fit.

Looks like 4.75 BS would center the tire better, but that outer lip would need trimming. Might likely still rub the inner wheelhouse on bumps & cornering, but could be drag-raceable.
I've run into the same issue with customizing the BS fitting that size into a Duster: not so much with the tub room, but centering the tire. Takes some cleverness on the opening.

I ended up buying the wheelwell lip rolling tool from Eastwood for my ‘69 GTX, and it gave me an extra 1/2” of tire clearance.

On my car I have the 295/65/R15 BF Goodrich Drag Radials on 15 x 9 w/4.5” Back spacing, and will change the tires to 10 x 11.5 Quick Time Pro Cheater slicks with tubes. I have the same setup on my ‘68 Super Bee, and I have more room as far as width, and could have gone with 10” wheels.

Your car is different, but you may have more room between the spring and sidewall, so maybe a little more back space?

Mark

Rear ride height will be a big factor.

My M/T 275's work really well and are centered in the wheelwell.

I experimented with flipping the front spring hangar to lower it further and both sides of the tire touched rhe inner and outer stock wheel tubs.

The Hoosiers that I had would no way be able to be driven even in the pits without rubbing the quarter panel so I ended up selling them and got some 29 X 9 M/T ET Drags. The sidewall was just too wide on the Hoosier Quick Times to fit without modifying the wheel tub or moving the springs in with a differn't off-set rim.

So I just have the 275 M/T SR radials for the street and my slicks for the 2 races I plan on running this year.

Gus