[Harry6]

I have an opportunity to switch tires / rims on my car at no cost. I am wondering if the switch would be likely to cause a fuel economy penalty. The replacements would be either of two possible sizes, I don't yet know which. I'll know the size before I decide whether or not to switch.

On one hand, the replacement tires would be wider the stock tires, and that would likely be bad for FE.

On the other hand, the replacement tires have a larger diameter, which would be good, and lower aspect ratio, which I suspect would also be good. Care to venture a guess about the likely outcome?

The car is a camry, current, stock, tires are 205 65 R15, outside diameter is 25.5 inches.

Option A is 215 60 R16 (10mm wider then stock, slightly lower profile, outside diameter is .6 inches more then stock.

Option B is 215 55 R17 (10 mm wider then stock, lower aspect ration then stock, outside diameter is .8 inches more then stock.

Incidently, I notice that current Camrys, including the hybrid, use the 215 60 r16 size. Of course, this could just be for styling, and the gear ratios could have changed as well.

What do you think?

Harry