Biggest tire I can run on my stock 17x7.5 wheels?

[TimD]

So we have out first Jeep. It’s a 2020 JL sport. We’ve put on a front stubby bumper and as of now, we haven’t lifted it...but we will. I’m wondering, what’s the biggest tire I can run on my stock 17x7.5 wheels? Thanks, y’all.

Sponsored

 

[Stuckinthesand]

You can fit 315/70/17 on them equivalent of a 35” tire. You will need a lift and wheel spacers to do it though.

 

[daveprice7]

It's gonna vary by tire manufacturer, but 295/70 (11.5"+ wide) are about the widest and 285/75 are probably the tallest metric sizes I've seen that are in spec for 7.5 rims.

 

[chewieHVT]

I just did this. I was trying to keep my stock wheels. After researching wheels/tires/lift, I went with a Metalcloak 2.5" lift. In order to keep the stock wheels, I was going to have to either get 2" spacers or buy new wheels. In the end, I opted for new wheels. It's really a personal choice whether you want spacers or wheels with less backspacing. Fuel Anza wheels with Nitto Ridge Grapplers 315/70/17.

 

[TimD]

I appreciate the info. Already planning on a 2.5 lift. Just not sure which to do first.

 

[TimD]

Thanks for the info.

 

[YYCSahara]

You can fit 315/70/17 on them equivalent of a 35” tire. You will need a lift and wheel spacers to do it though.

That size is closer to 34.5" tire. Not a huge difference from 35" but every bit helps with fitment.

 

[CT_LFC]

I came here because of the tires but left because of the grill.

 

[JJSix]

That size is closer to 34.5" tire. Not a huge difference from 35" but every bit helps with fitment.

Depends on the manufacturer on actual tire sizes so I wouldn't be too concerned about it either way as the 315/70/17 is essentially a 35" tire. For example, a KM3 is a measured diameter of 34.5" in a 35/12.5/17 which is smaller than Toyo's 315/70/17 and measures in at 34.6". Toyo has a 35x12.5x17 as well and its 34.8" wide just for reference. Some companies don't even stock both size since they are essentially the same. (all measurements from manufacture websites)

A 35 is probably the biggest tire you're going to want to run as listed above but I personally wouldn't worry about differing between 315/70 vs 35/12.5, you're talking about 1/10ths of a inch difference so I'd go with whatever tire you like the most.

 

[aldo98229]

I appreciate the info. Already planning on a 2.5 lift. Just not sure which to do first.

If you are planning to do a lift, do that first. The lift will dictate what tire size you can fit.

 

[chewieHVT]

If you are planning to do a lift, do that first. The lift will dictate what tire size you can fit.

This.

 

[J0E]

See my https://bt39.com/ if you want to see how much you drop when you air down.

 

[Oldbear]

Big tires without a lift will cause rubbing...if you’re seton 35’s I’d lift it first.

 

[The Last Cowboy]

The 315s on my F150 are at 33.25” with the weight of the truck on them at 35 PSI. The Jeep weighs a little less, so maybe 33.50”.

Sponsored