small or big wheels for trailer will save gas ?

[city hunter]

Hi There I am wondering if I put a 235/75/15 or 185/65/15 ( tires size )on my 4x6 trailer which one will save gas for my toyota 4 runner when I pull it on Highway ?Any help would be appreciated,thanks a lot !!!!

[scottwh]

The smaller ones. Less surface area on the ground, the less drag there will be.

[city hunter]

The smaller ones. Less surface area on the ground, the less drag there will be.Really.......?I think I have to change it into a small one,thanks !!!

[Surrey Boy]

Less friction with the road, less unsprung weight, lower trailer which has less windage.

Think of a ten speed over a cross country bicycle.

[boxhitch]

Why use 15" ? ground clearance ?
12" are rated about 1200 lbs per

[416]

http://blog.performanceplustire.com/do-larger-tires-get-better-gas-mileage/ this explains it all ;-);-)

[finngun]

smaller wheel wear out little faster than bigger one..takes more turns...:confused: and not so good at potholes..

[wrenchhead]

Bearing need to be greased quite often with the smaller ones as well as they get hot with the higher rpm.

[lilhoss]

I wouldn't worry so much as to the size,instead worry about rating for PSI,how many plies,bearings,and overall loads you'll be hauling.Too light of a tire in offroad conditions and your asking for trouble.

[city hunter]

it really help,thanks a lot !!!

[wildcatter]

Same size, let's say 15" but narrower tire less rolling resistance.

[Boner]

It would be nice to have the same wheels(bolt pattern) and tires as the truck so you could get away with sharing a spare tire. In a perfect world.

[city hunter]

It would be nice to have the same wheels(bolt pattern) and tires as the truck so you could get away with sharing a spare tire. In a perfect world.
I think the same as you :D

[Sofa King]

I wouldn't worry so much as to the size,instead worry about rating for PSI,how many plies,bearings,and overall loads you'll be hauling.Too light of a tire in offroad conditions and your asking for trouble.

this.
i'd be worrying less about mileage and more about your loads and the bearings.

[hunter1947]

Make sure your truck is tunned up so mileage goes a long ways the smaller tires the faster they have to turn the bigger the tire they turn slower my pick is larger tires..

[bigslim]

Tire pressure is as important as anything. Try riding your bike with 10 psi in the tires then put in 60 psi the difference is amazing= rolling resistance!
Size equals weight, more weight more power ( fuel ) to move unit.
One break down, always at an inconvienent time and all that fuel savings goes out the window.