A place for more technical discussions. Please make sure you post in the correct section on the site, this way it keeps the site tidy AND ensures you get a more relevant answer.
Remember bigger tyres will put your odometer out so you need to factor in the % change in when calculating your MPG. The drop in economy with bigger tyres is always there, but it isn't quite as bad as the odometer makes out!
Busta wrote: Remember bigger tyres will put your odometer out so you need to factor in the % change in when calculating your MPG. The drop in economy with bigger tyres is always there, but it isn't quite as bad as the odometer makes out!
i'm running 195 80 15's. my sat nav makes this size near as perfect for the speedo reading. i understand as standard the speedo reading will be slightly under actual speed. this will have an effect on mpg
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