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Tire sizes on a 71 duster ?? #3111599
01/13/23 02:12 PM
01/13/23 02:12 PM
Joined: Mar 2019
Posts: 181
Ontario Canada
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Bennoel 10 Offline OP
member
Bennoel 10  Offline OP
member
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Joined: Mar 2019
Posts: 181
Ontario Canada
Been running 15x7 small bolt rally on the rear for quite awhile. 255x60 15". Quite happy with them. I now have another pair of 15x7 rally sbp for the front. My question is what size of tire will fit without any interference ?? Presently have a 14x5.5 factory rally with 225x70 14". No issues but very close to the front lower fender. I would like to run a 235x60 15" but worried that might be to large. Anyone out there already running this set up ??? Don't want to order the wrong size. Looked at the charts that tell the dimensions but sometimes in the real world they are a little different. Thanks to any and all advice.
Bennoel

Re: Tire sizes on a 71 duster ?? [Re: Bennoel 10] #3111612
01/13/23 02:30 PM
01/13/23 02:30 PM
Joined: May 2003
Posts: 3,090
N.W. Florida
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Fat_Mike Offline
master
Fat_Mike  Offline
master
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Joined: May 2003
Posts: 3,090
N.W. Florida
Use this calculator. Put in your current tire size, then click the appropriate "Alternate Tire Sizes" button.

https://tiresize.com/calculator/

Re: Tire sizes on a 71 duster ?? [Re: Bennoel 10] #3111637
01/13/23 03:16 PM
01/13/23 03:16 PM
Joined: Aug 2003
Posts: 43,233
Bend,OR USA
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Cab_Burge Offline
I Win
Cab_Burge  Offline
I Win
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Joined: Aug 2003
Posts: 43,233
Bend,OR USA
I've had the centers on the stock steel wheels moved to fit some of my cars in the past, grind the factory welds off and reposition them to fit better and reweld them by a good shop up :scope.


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Tire sizes on a 71 duster ?? [Re: Cab_Burge] #3111667
01/13/23 04:28 PM
01/13/23 04:28 PM
Joined: Sep 2003
Posts: 19,492
north of coder
moparx Offline
"Butt Crack Bob"
moparx  Offline
"Butt Crack Bob"

Joined: Sep 2003
Posts: 19,492
north of coder
when my buddy needed tires for his wife's 72 duster, i had to make do with the wheels he had already bought. they were cragar 15x7 with a 4 1/2" back space.
as the car was set at the ride height it was going to be, and knowing all about the fender edge clearance issue of these cars, i was clearly boxed into a situation that was going to be kind of difficult to come up with a good solution.
he also stipulated the tires had to be white letter BFG's.
after a couple of mock-ups using my collection of roller wheels and tires, plus knowing tire dimensions are usually not what is posted, i came up with using 205-60's BFG white letters.
they look good, fit the wheel opening good, and there are no rubbing issues whatsoever.
for the rear i choose 225-70 BFG's. that size filled the rear opening, with no issues there as well.
both tires have a 6" tread width, and fit the 7" wheels very good.
just my experience with the thread question. your mileage will vary.
beer

Re: Tire sizes on a 71 duster ?? [Re: moparx] #3111690
01/13/23 06:41 PM
01/13/23 06:41 PM
Joined: Jan 2003
Posts: 20,831
A collage of whims
topside Offline
Too Many Posts
topside  Offline
Too Many Posts

Joined: Jan 2003
Posts: 20,831
A collage of whims
I've run a 235/60 R 15 on 15x7 with 4.25 BS on the front of a '74 Duster (275/60 R 15 on 15x8 4.5BS rears).
I lowered the front a little, and had to cut a 3/4" 45-degree angle at the front bottom corner of the ft. fenders.
Plenty of clearance for street driving (speed bumps, driveways, etc).







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