Biggest Tires I can put on a stock 1970 Duster

[rubi50w@]

it is a stock car with 14 inch wheels that are a five lug with a four inch spacing what modern tire sizes can I use now/ What is the modern equivalent of an E78X14. That's what it came out with.

 

[Ironracer]

Im running 295/50/15s rear but using SS springs.....

 

[mvh]

On what wheels?

 

[72bluNblu]

Well you could do a search, where you would find literally DOZENS of threads where this has come up for various wheel and suspension set ups.

In general, a bone stock Duster can fit 275's in the back if you get the backspacing on your wheels right for your car. And that's with the tires inside the wheel wells. Anything larger than 275 requires the ride height to be high enough that the tires and quarters don't come into the same space. So yeah, guys run SS springs and can sometimes run larger than 275's out back, but it's because there's a 2"+ air gap between the tires and quarters and the springs are rock hard. At the stock ride height, or lower, 275 is max without cutting stuff.

 

[4mulas]

As above. Also if you’re talking 15” , 215/65r15 is about as big as you want to comfortably go.

if you’re sticking with your stock wheels p205/70R14 should give a choice of two or three manufacturers

this car has 215/65 front and 255/60 rear. Both 15’s

 

[C130 Chief]

So if you are running the stock 14" rims, 195/75-14 is probably the best fit and closest to the original. A 205/70-14 will also fit, but they are a bit wide for the rims and you won't gain much.

 

[michiganpat]

I've run 205/7014's on my duster on SBP stock wheels from 91-94, and SBP rallye's since 1995.....