Tire question for towing

NastyZ28 · May 15, 2016

Hey guys I'm new here been searching around and can't seem to find exactly the answer I'm searching for. I am getting down to needing tires I am currently running 275/70/18 on hankook dyna pro ATM.

I found a set of the factory optional 20 inch wheels Powder coated black they look awesome lol. Anyways and doing some math figured out that 305/55/20 would be the exact same height as my current set up but be about 1.2" wider. Looking at BFG ko2 For either size.

My question is this would I be just fine towing with the 20s losing a little bit of sidewall. Plan on picking up a toy hauler camper down the road. I've pulled an 11,000 pound horse trailer with my hankooks and the tires or truck didn't even break a sweat. Running a 2011 2500 with 6.0.

Big Whiskey · May 15, 2016

Just double check the weight rating of your new tires, but you should be fine. Those 305/55/20's might ride a little more firm than your 275/70/18's, but they'll probably be more stable under a load.

NastyZ28 · May 15, 2016

It rides like shit now lol I didn't get a 3/4 for the ride. But they are 3195 per tire I believe. The 18 inch tires are 3495. So about 600 pounds total. Which doesn't seem to terrible.

Blue2500CC · May 18, 2016

Even with the tires rated at 3195lbs you are still limited to the 6200lb rar. Just how large of a toy hauler are you looking at? TT or 5ver? If a large 5ver you may be pushing the limit on the tire/axle rating depending on the model.

We have the factory 20's, still running the crap GY SRA. Havent noticed or felt any issues towing our 32 BHDS with ~1400lbs tw.

To bad your not closer as I have seriously considered switching to the factory 18" for a better tire selection. Very limited 20" selection to go to a little larger tire like a 275/60 (haven't found an LR E).

Please post a pic of the 20's if you do get them!!! I have also considered black for ours also, or a dark grey.

Good luck!!!

BigBadSierra · May 18, 2016

Yes I towed with the SRA's the only issue was they sucked on wet grass and dry pavement lol.

I have Goodyear Duratrac now they have a better tow ratting then the stock SRA's and I defiantly have no issues with wet grass, or snow or mud or sand ha ha...

Chevor · May 18, 2016

Tires are more stability the wider the rim compared to the width of tire.

NastyZ28 · May 20, 2016

I am gonna get BFGs or dick cepek fun countries. It would be a big TT toy hauler no 5er at this time. Lots of tire options in the 305/55/20 size. Just be a little wider but I have room for width I just can't go any taller unless I level it.

NastyZ28 · June 4, 2016

Alright guys I went with 275/65/20 bfg it is a 34 inch tire. Very slight rub on drivers side at full lock turning left. Trimmed mudflap a bit and its all good. Retained lots of sidewall. As well. They are E rated tires and can run 80psi.