S~Factor

Front tires will stay at 205 or 215.
How much wider can I go on the rear tires before I see the MPG suffer?

EDIT: Does anyone experience a DROP in MPG by switching to wider tires/wheels?

Thanks,
Ray

aggie

Tire width does have an impact on mpg, but you should really only consider 245-45-16 if you are going non-oem. See sticky at top of forum. However, there are tires that have lower rolling resistance, maybe improving 2 mpg.

rijowysock

width does effect but nothing to where ud see difference.

ud havebetter luck swapping out all fluids to syn and see result

go 245 in rear

problem solved

S~Factor

Thanks for the reply.

I definitely do not want to stay with 245...

I've had experience with the an '01 RAV4. I switched from 215 to 255 all around and the MPG dropped from 27mpg to 23mpg.

I want to go 265 in the rear if I could but will I see the same drop in MPG?

S~Factor

Just rephrased my original question.

rijowysock

who makes a 265 16" tire?

other than track tires ive seen 245 as widest.


a better compound tire in the same width as now will be 10x better than a regular compound in wider size

S~Factor

Forget about the 16" stock wheel for now. I just want to know if I go, say, 17 x 8 in the back with 265 wide tire, will my MPG suffer? If so, about how much?

CoralDoc

Yes, your mpg will decrease with a wider wheel. Assuming that you correctly match rolling diameter the reasons for the decrease include heavier wheel weight, increased wind resistance, and increased rolling resistance.

Incorrectly compensating for the diffferent rim size and tread width with an inappropriate aspect ratio to match rolling diameter will also affect the mileage disparity. This causes odometer error and could either mask or augment the decrease in mileage depending on whether the tire/rim combination is over- or under-sized. In any event, I cannot precisely predict the amount of decrease.

Ubetit

I have a hard time believing that.

S~Factor

Yeah, me too. But the numbers don't lie. I log my MPG everytime I fill up from the first day I got the truck.

CoralDoc, thanks for the reply. I suspected some drop in MPG for the same reason you mentioned. I was hoping I would get some reply from people's personal real world experience if the drop in MPG is significant (3+ mpg) or not (1 to 2 mpg).