I have my doubts but thought I’d ask anyway on some wheels/tires I’ve seen for sale

74 Challenger

Fairly stock height at the rear

Not tubbed

Would these fit ? ….

15 x 10 Weld Pro Stars

6”’backspace

Micky Thompson 30 x 12.5

?

Thanks

my gut tells me the 6" back space will hit the springs, and the 30" height will hit the front of the wheel opening at the very bottom.
hopefully, others will chime in with personal experience.

Not gonna fit without and

All thru the 70s and 80s many of us ran N50x15 tires on 15x10 wheels on E bodies. The N 50 is about 28"tall and 12.6" at the sidewall. A 15x10 wheel with 4.5 backspace provided clearance on the inside but air shocks were mandatory to keep the rear up high and not coming down onto the outer tread of the tire. So even an N50 did not fit correctly and it is smaller in diameter than the tire you are inquiring about. 6.5" backspace is a huge no go on the wheels.

Conversely, and somewhat irrelevantly, Pro Trac N50-15's fit just fine in the back of my 64 300 running Cragar SS 15x10's. No Skyjackers needed.

5-1/2" back space would fit +/- some for each individual car/factory tolerances. I run 315/60/15 drag radials (30") tall with no wheel well modifications.

Nice , any more pics ? Thanks

Mine however is mini tubbed with 12" wide wheels with 6" b.s. I was just clarifying that a 30" dia tire with fit.

With the springs in the stock location they won't fit. I use a b body width axle with the front spring box moved to the frame rail and 2" staggered hangers. Wheels are 10" wide with 5" b/s. With a 10.5 x 29.5 radial slick I have 1/2" min clearance from the springs. They are also close to the wheel opening lip too. Unfortunately I don't have any decent photo's of the fitment.

While I offer no concrete proof - IIRC a 275 60 15 on a 15x8 wheel with 4.5" BS is the largest that fit properly in a STOCK wheel well application. I have a 95 Dakota project currently. I bought my tires. 29 15 15 Hoosier radials. I bought a kind of pricey tool that simulates any wheel for proper fitment and correct wheel purchase.


https://www.speedwaymotors.com/Wheel-Fitment-Tool-for-Tire-Fit-Testing-Size-Measuring-Mockup,485869.html?utm_medium=CSEGoogle&utm_source=CSE&utm_campaign=CSEGOOGLE&gclid=CjwKCAjwoqGnBhAcEiwAwK-OkbJzMGWZQCERpoljGSqCxLGyL2KdqnNirEvhHZPPuEy0wNpKZ3KniRoCslgQAvD_BwE

The issue is not the size of the wheel wells, but the spring location. E body springs are splayed wider at the back, so without a spring relocation, you will hit these before you run into the wheel well.

With a 1.5-2" spring relocation, you can fit a 335 width tire in the stock Challenger well.


I have fit a 295/50 on a 15x8 wit 5.25 backspace in my Challenger with no mods at all.

My Current set up is a 305/45 on a 15x10 with 5" back space and a 2" spring relocation and a B body housing. The 2" relocation makes the B body housing a drop in with no perch relocation. If you retain the stock E body housing you will need to move the perches to mate with the spring relocation and you could get away with a 6" back space.

What tire size would fit with a 15 x 10 and that 6” backspace ? Thanks

the 6" backspace wheel will hit the springs, without the tire. i'm almost positive of that.

Ok thanks , makes you wonder why they make the wheel with that backspace ? I guess for people with modded drag cars ?

IF your leafs are still in stock locations, the tires will likely hit the leafs a little, a 1/4" spacer could help relieve that interference. Also, plan to flush your fender lips as however needed.... not any big deal if the car already has some mods. Those are tall tires.