Different Tyres Affect Fuel Consumption?

MaccaHallam

I've just had some new Hankook tyres fitted to my car replacing Michellin's that were on previously.

I don't think I'm driving any different that I was before, more carefully if anything but my MPG has dropped by a few miles. Will this be due to the new tyres themselves or new tyres that haven't been fitted correctly? (wrong pressures etc)

mikey72

Rolling resistance will affect mpg.

Energy savers have more rigid sidewalls, the same as an over inflated tyre. Others don't, so are harder to roll, the same as an under inflated tyre.

Check the pressures though.

Ranger8

Different tyres can definately affect mpg.

savemoney

yes it does happen I heard this before on a motoring forum others have reported different mpg when they changed tyres

MaccaHallam

You'd think it would be better for consumption getting new tyres. Will check the pressures in the morning and inflate/deflate as necessary.

Should the consumption get better as the tyres 'bed in'?

mikey72

MaccaHallam wrote: »

You'd think it would be better for consumption getting new tyres. Will check the pressures in the morning and inflate/deflate as necessary.

Should the consumption get better as the tyres 'bed in'?

The consumption should stay the same I'm afraid.

MaccaHallam

That'll teach me for getting cheaper tyres. Should work out more expensive over time than getting the more expensive ones.

Any recommendations on what to get next time I need tyres?

mikey72

Michelin Energy for mpg.

colin79666

Remember that tyres aren't all about mpg. A harder tyre with lower rolling resistance will get better mpg but you will want that rolling resistance when you want to stop in a hurry!

Its about a balance between many factors such as braking (wet and dry), cornering, wear rate, noise, mpg and cost.

mikey72

colin79666 wrote: »

Remember that tyres aren't all about mpg. A harder tyre with lower rolling resistance will get better mpg but you will want that rolling resistance when you want to stop in a hurry!

Its about a balance between many factors such as braking (wet and dry), cornering, wear rate, noise, mpg and cost.

How does rollig resistance, (which is mainly deformation of the sidewalls) help you stop?

Grip is the main factor.

neilmcl

MaccaHallam wrote: »

That'll teach me for getting cheaper tyres. Should work out more expensive over time than getting the more expensive ones.

Any recommendations on what to get next time I need tyres?

There's nothing particular wrong with Hankook tyres. There are many factors that effect fuel consumption, particularly the temperature. It's a lot colder than it has been and this can have detrimental effect on your mpg. Also, as another poster mentioned, check your tyre pressures are correct, don't assume your tyre fitter will have set them correctly.