Less Miles With New Drive Tires?

Following because I'm curious. I'm a company driver not paid miles. But I do notice that my odometer isn't making sense about the time they replaced all my tires. I asked, nothing happened and it's been going for months now. I'm about a thousand miles from where my odometer should be.

Hopefully the OP gets it resolved before your this far.

 

Yep, that's correct. Basic high-school geometry right there. Your drives now have 20/32 more tread then the old ones so they take longer to complete a full rotation now.

 

Somedays I just want to slap myself. Why didn't I think of that.

He's losing 8-10 miles a day. It's hard to wrap my head around him losingbthst much over a short time with 20/32 bigger tire.

 

That's why people claim they hey better fuel economy with tires that have less tread depth then new tires. It's because the tire is rotating more per gallon of fuel.

Got to love all that high-school math we all swore we would never use in the real world, lol

 

My dedicated route started @ 636 miles, I'm now turning 644 miles / day on the same tires 3 years later, and I'm almost a full 1mph slower.

 

Different Tire Brands can have different revolutions per mile on the same size tires, all close but a little different can show up in the long run.

 

You might have been making more than actual miles with the worn tires. I'll bet it averages out close enough over the life of the tires.

 

If my math is correct, 20/32" would show a loss of 3.51 miles for every 100 miles run. That's on a 22.5" tire.