275/60/20 on OE 20's

[Jonathan19Limited]

I just bought a set of Pirelli Scorpion AT Plus 275/60/20's to swap out with my OEM Night Edition 275/55/20's for the winter season. Now I'm wondering if I'll run into any issues if I ever get a flat and need to use the spare which would be the OEM 275/55/20?

Unless you have the limited slip (anti-spin) rear diff, it wouldn’t have a big effect having a mis-matched tire temporarily. And by that I mean if you had a flat on the rear axle with an lsd diff, it would work the clutches some but it’s a small size difference so I would still do it just long enough to get to a tire shop.

 

[cjg817]

Thanks for the intel. I figured the small difference in diameter wouldn’t make that much of a difference but just trying to be informed and not screw up my new truck.


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[BilletMotoRam]

I just bought a set of Pirelli Scorpion AT Plus 275/60/20's to swap out with my OEM Night Edition 275/55/20's for the winter season. Now I'm wondering if I'll run into any issues if I ever get a flat and need to use the spare which would be the OEM 275/55/20?

Worst case put the 275/55 in the front

 

[Hadit55]

275/60/20 Falken Wildpeak AT3W on stock suspension. View attachment 91016 View attachment 91017

How have these been for you? Just ordered the same ones on a 2020 1500 with stock suspension. Thanks!

 

[theblet]

Whats your gear ratio?

Gear ratio will be negligible with this size. I have 3.21's and can chirp second gear. Tow's fine too.

 

[Hadit55]

Are the tires in this picture 275/60/R20 or are they 275/55's?

 

[Hadit55]

275/60/20 Hercules tires, 1/2" wheel spacers for a little poke, 2" Motofab front level. Pretty happy with the result. The 33" tires are just about right, but might go with 34s when these wear out.

View attachment 128770 View attachment 128771 View attachment 128772

For some reason those front wheels/tires look HUGE! Must be the camera angles lol.

 

[theblet]

Are the tires in this picture 275/60/R20 or are they 275/55's?

My tires are 275/60r20

 

[SGMBailey]

275/60/20s on stock rims no lift kit.

 

[Hadit55]

275/60/20s on stock rims no lift kit.

Looks awesome! Is this a built to serve model? And any rubbing in the wheel well?

 

[kdoublep]

Pirelli Scorpions AT plus 275/60 20 115T no rub all stock

 

[SGMBailey]

Looks awesome! Is this a built to serve model? And any rubbing in the wheel well?

Not a BTS, no rubbing at all. Cooper Discoverer AT3 XLTs

 

[Hadit55]

Not a BTS, no rubbing at all. Cooper Discoverer AT3 XLTs

Awesome! You planning to level at all?

 

[SGMBailey]

Awesome! You planning to level at all?

Not at the moment, may be a future project.

 

[BilletMotoRam]

275/60-20 Cooper rugged treks, stock suspension, KMC 20x9 0 offset. Enclosed trailer hooked up so it sits pretty level. No rubbing.

 

[User_100353]

275/60/20. All stock. No rubbing

 

[mcosub]

275/60/20. All stock. No rubbing

So now you just have to get the Speedo recalibrated?

 

[JF19Longhorn]

Mickey Thompson Baja Boss ATs in 275/60R20's on OEM wheels.

The truck has the ORP & Bilstein 5100's, but only on notch #2, so barely any lift at all because I tow decently heavy for a 1500.





I did pull the 18" spare and have an equivalent AT Load, E load rated, tire put on. It fit back under the bed with no issues.

Speedo is roughly 2 mph off @ 70mph. I have not corrected it yet and probably won't.

 

[theblet]

So now you just have to get the Speedo recalibrated?

I didn’t recalibrate mine. It’s only off a like 2 mph at 60. Your fuel mileage calculation will also look worse than it is on the dash.

 

[firemedic10584]

I didn’t recalibrate mine. It’s only off a like 2 mph at 60. Your fuel mileage calculation will also look worse than it is on the dash.

If you guys have AlfaOBD, very easy to change the tire size on there. I did mine when I had my new tires put on a few days ago.