Quote:
Originally Posted by mpg_numbers_guy
Are there any other cars with such MPG discrepancies based on wheels alone?
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Renault has a webpage which shows the effect of temperature and rim size on range, for its electric Zoe
Bigger rims = less range
But it's not all that clear cut, and it also depends on the tyres fitted
Summer = +3% diameter 185/60 on 6.0 x R15 , 13,7 kg, EU FE : B-rated tyre
Winter = regular diameter 175/65 on 5.5 x R14 , 12,0 kg, EU FE : C-rated tyre
And guess what ...
So the smaller, lighter, regular diameter winter tyre matches the "light" alloy, oversized tyres, despite being used in winter conditions, and despite its worse RR
