285/70r17's

Approximately what size lift is needed to fit these tires? I currently have the billies set at .85, but my truck sits well over an inch higher. Would a cab mount chop be needed? I apologize for adding yet another tire size thread!

 

You can 285/70/17 with zero lift if you want to. However you would have to cut your fenders and do the cmc, I'm guessing you don't want to do that. So generally about 2.5 inches of lift and the cmc with allow you to run and clear 285's. The only thing that still might hinder you after that will be the back space and offset of your wheels.

 

So anything greater than 265 will require the CMC?

 

Normally, especially if you wheel

 

It is a good reason to stay at the 265/70R17s (1" larger than stock) and keep them light by saying with C load tires if you wheel, and P-loads if you don't. 285s will likely be heavy E-load which will negatively affect ride/power/mpgs/braking.

 

I just got 285's and am really needing to do the CMC.

 

I had a set of 285 old D duratracs and they weren't bad at all. I would stay away from any E rated tire in 285 size

 

I just really enjoy the bigger tire look. I don't wheel often. My current all terrains in 245 are load range E's, so.... bigger tires aren't really a necessity. When these wear out, I'll probably jump up to the 265 unless I find some used ones for a decent price.

 

used tires....... dont ever skimp on tires.

 

Agreed. I buy my tires, sell them for 50% what I paid when near 50% tread. Then use that to cover 50% of the new tires. That way I am always on fresh tires and it doesn't cost me anything more (other than mount/balance).

 

285's can be done without cutting / modifying the cab mount. I'm running 285-75-16 K02's on my truck with about 2 inches of lift in the front. Adding caster is the key here (moving the wheel forward in the wheel well). I've just trimmed some plastic here and there, and have no rubbing (during daily-driving or on the trail).

 

I did the same thing and dont have any rub issues. But at full left turn it is super close to the cab mount. you cant even fit a finger between them

 

I'm running 285/70/17's with an ICON stage 1 setup and SPC UCA's. I had to run Rokblokz mudflaps and cut some of the fender liner out on the front. No CMC but I've probably got a solid inch between the tire and cab mount.

 

it wont rub the cab mount till you actually flex your truck....

Seen 285's take off fender flares without much issue.

 

i assumed that an "off road expert" would take the time to post...
that said, my truck is daily-driven, has seen it's share of trail use ("flexing" enough to repeatedly use / need the rear locker), and there is no evidence of tire rub on the cab mount. BUT, yes, plastic will need to be trimmed depending on how much / how far the suspension is cycled.