Looking at getting new tires. I think I am gonna get the Goodyear Wrangler Silent Armor tires from sams club. Just wanted to know how much the 75's would effect the milage? I still have the stock dunlops on with 70,000 miles on them. I put the two tires next to each other and was suprised how much taller the 75's were. There is no lift on the truck as of now. Just manly concerned about preformance and gas millage.

 

your speedo should be dead on with the 75's its not gonna affect your mileage (negligible affect)

I would go with the 75's

 

You may experience rubbing with the 75 series sidewalls-especially if you need to run front mudflaps. Happens mostly in reverse or at 3/4 to full lock in turns. This is what is happening to me-even after my Old Man Emu new springs (881s up front)

You may want to have one mounted and test fitted to the front hub to be sure before you buy.....

 

I have the 75 series. Much better than the 70 series. I only had to trim a VERY LITTLE bit off of the front trim.

 

I just put 75's on my '00 runner & have not had any rubbing; but its a dd; no offroad.

 

I just had 265/75R16 BFG All Terrains installed on my stock 1998 SR5 4x4 4Runner.

First off, Sams (or atleast my Sams club) is VERY strict about putting a tire larger than what is already on the vehicle. It took three tire techs to convince the 'tire manager' that the tires would fit. (70 to a 75). Their techs are top notch, that was the first time I had EVER seen a tire tech actually use an honest to goodness torque wrench on my lug nuts, and not a torque bar. They also alerted me to the front brake rotors needing to be replaced soon. Good guys, and even chatted with me on how good the 4Runner looked with proper offroad tires on it.

The speedometer is DEAD on with the 265/75's, but the odometer is reading slow. I noticed this on a road trip with my GPS; I reset both the 4Runner and GPS odo at the start of the trip, and the GPS was reading 30 miles more out of a 400 mi trip. Not too much of a difference, but it's large enough to irk me. MPG miles calculated via GPS since the 4Runner odo is off. I'm still getting 320 miles to 18 gallons of gas, roughly 18 MPG, which was exactly the same as with the 265/70's.

The tires do rub a SMALL amount when turning into driveways with a steep grade, nothing to be concerned about as neither tire nor body shows any sign of damage from rubbing. What is strange is that I've had the 4Runner flexed out, front tire turned and front suspension completely compressed, and the tire wasn't rubbing. I've already had it offroad more than a few times pushing the limits of traction and my intestinal fortitude with the new tires, and they have never rubbed offroad. I guess they just don't like steep driveways.

One word on the Goodyears; Sam's tried to get me to buy the same tire (killer deal if I remember right, buy 3 get the 4th tire for $50) but I turned them down due to the Goodyear only coming in a E load rating (very stiff tire). I guess if you don't mind having a heavy duty 'towing' tire on your 4Runner, then I'd go for it. Even though the 265/75 BFG All Terrains I bought are D load range, I feel that there is a signifigant difference in stiffness between D and E. The Goodyears are an excellent tire either way...I was seriously considering them before I went to the BFG's.

 

The 75's should of came from the factory.
This subject comes up at least 4 times a year and the opinions never change.

 

I went from 70's to 75's and I definitely noticed a difference in acceleration and mpg's. I have to go 65mph now to get the same mpg as I used to get at 75mph with the smaller tires. I'm commuting a lot now, so I wish I hadn't moved up. Some may disagree, and that's fine, but that was my experience.

 

A 265/70R16 is: 10.7" wide, 30.7" tall, revs/mile are 678

A 265/75R16 is: 10.6" wide, 31.7" tall, revs/mile are 656

If your speedo reads 65 you will be going 67.22 mph

 

i would still love to see a 2WD 01-02 low rider springs with a set. i want to upgrade to this bigger size for looks, the tires are actually a little cheaper, and hopefully get a little lift out of it. but by looks the front end looks like it really couldnt handle that bigger of a tire

 

Thanks for all the great info. It gives me something to think about. I am still thinking about the Nitto's and the Mich LTX. The mich. are kind of boring but I sure they would last.

 

I just switched to 235/85/16's. They are a tiny tiny bit bigger than the 265/75/16's. I believe this size is great for having the advantages of the bigger tires, but also not being prone to the MPG loss from upgrading to a 32" tire. 265/75's is going to have more rotational mass than 235/85's. I initially thought that I lost 2 MPG's with the 235's, but forgot to compensate for the bigger tires. I found that so far, the average is ~0.5 MPG loss. Not bad at all. The "lift" acquired was 0.6 inches.

 

Don't forget that the 75 series gives you approximately 0.5mpg better than the 70 series...due to larger circumfrance (spell?)...

 

No, it gives you WORSE mileage. The engine has to work harder to turn bigger and heavier wheels. With the 265/75's, I saw a drop of ~2 MPG.

 

Yes that is true but when you are calculating your milage you must add in 0.5 mpg due to the 75 series being a larger circumfrance(spell?) than the 70 series... your oddometer is calibrated to the 70 series measurements, so it reads slightly short on the actually milage you have traveled.

 

You have it slightly backwards. You are correct that the odo and speedo will read slower than stock. So that means it's indicating you've traveled less distance than you've actually travelled. So when you calculate mpg, you are getting better mpg than is indicated by the odo miles.

Based on the above post, it appears to by 7.5% fewer miles indicated than actual, assuming the GPS is correct. So add 7.5% to the miles travelled and then calculate mpg.

I'm going to do the GPS/odo comparison on my next distance trip.

MadCityRich

 

When I replaced my stock 265/70/16's with 265/75/16's, my speedo was more accurate. Other than that, no difference besides gaining about 1/2" in height.

 

i feel dumb for asking but what tire size is equal to a 33 12.5 16

 

I am pretty sure that would be about a 315/70/16 sized tire...

 

1 inch equals about 25.4 mm Everything else is just multiplying and dividing.

MadCityRich