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-   -   Fuel consumption - Rft vs normal tyres! (https://xoutpost.com/bmw-sav-forums/x5-e70-forum/80099-fuel-consumption-rft-vs-normal-tyres.html)

JCL 03-21-2011 12:30 AM
Quote:
Originally Posted by J.Belknap (Post 813162)
Especially when you calculate it for the sole purpose of laughing diabolically at the tree huggers and polar bears.
So if I rode a bicycle 52 km this morning just for fun, and then walked both ways to a bicycle and outdoor show this afternoon, am I a tree hugger? Do I have to tell my BMW dealer? :rofl:

Lane_A 03-21-2011 12:23 PM
I switched from Dunlop RFTs to Michelin Non-RFTs and my gas mileage improved by just over 1 mpg, plus there's no comparison in the comfort and lower noise levels that the Non-RFTs give.

ukwildcat 03-21-2011 03:41 PM
Quote:
Originally Posted by J.Belknap (Post 813162)
Especially when you calculate it for the sole purpose of laughing diabolically at the tree huggers and polar bears.
;)

Bwahahahahaha!

Yes. Next time I'm getting an X5-M. So I can show the glaciers whose boss.

SJCFlyer 03-21-2011 06:51 PM
Quote:
Originally Posted by cb4 (Post 813050)
Just to give you an idea how much more the RFTs weigh. *The Michelin
18 inch rft that come on the x5 weigh 13 lbs more per tire over the
non rft Michelin equivalent (source: tirerack.com). 52 lbs of
rotational mass will definitely affect fuel efficiency.

When I went to non rft on my 3er my fuel efficiency went up by ~.5mpg.
I attribute that to the reduction in mass at the corners(total weight loss: ~40lbs).

I myself am keeping the RFT on my x5. *Unfortunately with the 3rd row
there is no room for a spare:(
:iagree:I went non-RFT after buying a portable inflator, patch kit and can of goop. Mileage, Ride and price are all MUCH better!


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