265 or 285?

If the stock size is 265/65/17 (TRD Sport)
Do you think a 265/70/17 will fit without any issues or rubbing?
Will the speed O need to be recalibrated for the small rotation difference?
Description is below,...

 

Do you have the stock suspension?

 

Are those FSW wheels? I’ve been looking at the bronze ones for my cement.

 

Yes, 17x8.5, 0mm offset in matte gunmetal.

 

What model tire is that. Looks good.

I was going to ask as well. That a nice looking wheel.

 

265/70/17 will fit on the stock wheels without any issues. Stick with 0 offset wheels and there shouldn't be any rubbing issues. I ran 265/70/17's on -10 wheels for thousands of miles and the outside edge of the front passenger tire would rub against the plastic trim around the pinch weld every once in a blue moon. The speedometer will show about 2 mph slower than actual , according to the roadside "your speed" radars.

 

That is about 2" front and 1" rear higher than TRD Sport,2017, stock set up.

 

Cooper Discoverer ST Maxx

 

Do you care about MPGs? Many don't.

If you do care then realize that our gearing (low torque at cruise speeds) means tire size and weight makes a BIG impact on MPG.

 

My opinion, to summarize this thread - answer the what first. As in, what would 285s accomplish that 265s cannot for your intended use?

The main two functional reasons for larger tires are greater ground clearance from the lowest point on the vehicle (usually the differential) and higher profile tires aid in airing down/traction for various terrain.

For your case and the fact it's a daily, imo, less is more. There would be very few instances where one inch or so difference in tire diameter would be impactful.

 

Sounds smart. I'd change your "impactful" to "advantageous" for accuracy because every single acceleration will be negatively affected (truck will be slower) and every miles mpg will be slightly worse (unless the vehicle gets a gearing/differential upgrade) with 285 vs 265.

 

Agreed, and it goes back to intended use.

If it's a crawler or trail rig, those things don't really matter. For a daily, they definitely do - the cons far outweigh the pros.

 

Why not meet in the middle and go with 275/70/17… Have the eye appeal of 285s, but without the headaches. No CMC. No rubbing outside of the fender liner (which is fixed easily with trimming or a heat gun). My gas mileage didn’t change at all moving to 275s either.

Shown my on my truck with a 2” lift / 17x8 -10 Konig Counterteer Type X / BFG KO2 275/70/17.

 

17x8.5" Icon Rebound wheels with 285/70-17R General X3 tires. No rub, No Cab mount chop. Minor trimming of plastics.

Fitting 285's mainly depends on your choice of wheel offset. And NOT installing UCA's that add Caster!

 

My move up to 275/70/17 from 265/70/17's cost me 2-3 mph at interstate speed in the wind. I went from E rated Dynapro's to E rated BFG KO2's. I have after market front bumper and I did add a winch after changing tires. I also got a tune after the new tire size so it's probably a combination of causes for the milage drop. I mostly just poke around town and out in the desert so I'm not loosing any sleep over the mpg's however.

 

The BFG 275s are E Rated and weight a bit more than your average C rated tire of similar size, but not too bad. Like ~8-10 lb more per tire. I was able to mostly offset that by going with a really lightweight wheel. Averaging 18MPG combined over the past three tanks, which includes i70 mountain grades in Colorado.

 

Someone finally mentioned the difference between LT and P metric tires. 8-10 lbs per tire will make a difference in power and performance. I upgraded to P265/70R17 specifically because there was a P option. I'm not doing hard core offroading and worried about puncturing the sidewall.

I have the SCS Ray 10 wheels. -14 offset. They rubbed. Has to remove the mud flaps, trim the front bumper, and do an alignment. They fit now.

 

Better gas mileage with the 265/75/16

 

Yes, agreed, I am getting 20.5 mpg overall my recent tank average has dropped to 17.6 because I mostly drive streets now and that's because I mostly get all the red lights, even the ones that have no cross traffic. I also have an extra 150lbs of skids and sliders.

 

There are ZERO downsides to 265/75/16 or 265/70/17. Both are the same overall dimensions other than the hole in the middle. They are split the difference between 285's and factory tires size wise. They cost a lot less than 285's. And are often cheaper than factory. On factory wheels they fit with no modifications. With aftermarket wheels you may have issues. You won't lose any measurable fuel mileage due to the size. Now, if you go to a more aggressive mud tire over factory AT's then fuel mileage will suffer. Ditto on performance.

285's only gain you about 1/2" of ground clearance over 265/75/16's. But there are a lot of negatives. They are only available in LT rated tires which means both more expense initially as well as more fuel and reduced performance over the life of the tires. If you can drive, you'll never notice the 1/2" of ground clearance.