Tire size confusion

Yes you can put on whatever tires you want. Those tires are practically the same exact things

 

The 295/75 has a wider aspect ratio than the 275/80, but I think they are both the same circumference. Meaning, the change is fine and won't cause any problems. The wider 295/75 is probably better in most circumstances.

 

80r is just a bit wider than 75r. Often used in RV’s I believe. I’ve ran them on my trailer a few times, alongside a 75r.

 

One of us has it backwards. Probably me. I’m always wrong. Lol.

 

The aspect ratio of a tire is the percentage of width to height.
An 80 is a very tall and skinny tire while a 50... well, look at a sports car tire size. Short and wide.

 

I wasn’t just wrong.I was really wrong. Only thing exactly the same IS the width.

 

Looks like your speedometer and tach will read 2.9% lower than it would with the original tires. So at 69 mph on speedo your actual speed will be 71 mph, if it hasn’t been recalibrated.

 

Taller aspect ratio; not wider.

Aspect ratio, or sidewall height, is a percentage of the tire width.