LT265 vs LT275

My stock size is 275/70R18 and one thing I like about them is they seem to give me a lot of options because it's a popular size. I'm still running the stock junk but plan to stick with this size when they finally wear down enough. I ran oversize tires on my last rig for years and you get used to the speedo being off pretty quick. Just use a GPS or app on your phone to compare reality vs indicated speed and it'll be an automatic calculation in short order.

One thing to consider is your spare. One if you can fit a larger size replacement, or two if you don't I'd be careful about going too far with the spare on the rear if you have limited slip.

Did you notice any change in MPG by running a larger tire?

There is a quarter inch of height different between the two and your speedometer will be off by about 1 mph at 65. Your stock tire rotates 618 times in a mile, the new size would rotate 608 times.

Any difference in fuel economy would be more influenced by tire weight. I think the difference would be very minimal. For the price savings and wider selection of tires, I would make the change.

My guess is you'll notice no change. The two are only 1/2" different. That equates to 1/4" on the ground. That's no different than driving a brand new tire and one that's worn out.

only about 0.55" larger in diameter. probably will not notice a change

jstaffon wrote:
Did you notice any change in MPG by running a larger tire?

Yeah but it was marginal, and it was a V6 SUV and was a much bigger bump up in size. I doubt you'd notice any difference with the Dmax with mileage, and certainly not in performance.

New tread or aggressive tread will have more of an effect on mpg than the slight increase in diameter. Depending on the vehicle, changing tire diameter could overall increase or decrease mpg a little.
If it fits, which I'm sure it will, here are no detrimental effects of running a slightly larger tire.

Go for it. It would be a greater impact to change to 75 series and stay at 265. Depending on the actual tire manufacturer the differences may be greater or less than the numerical comparisons tell you.
The wind will have a greater difference on your fuel economy.

Go with it, I see no issues with going a little bigger in size. if you are able to get a good,deal on them then I would!

you said hidden changes, one is the gear ratio. not much of a change but one any way