2010 Jetta TDI 16" Tire and Wheel Upgrade To 17" Michelin Primacy MXM4

Since my 2010 Jetta TDI Sedan has only 2200 miles I really can't compare any loss/gain in fuel economy when upgrading my 16" wheel/tire from the factory Bioline/Hankook. I would appreciate any comments from people who made this change and have more of a fuel economy baseline to work from.

Performance wise the my new combo is big upgrade especially in stopping distance, something critical in Dallas area driving. Michelin touts around a 20 foot decrease in stopping distance with comparable premium tires.

Tires are very quiet at highway speeds and stable with heavy rains with cross winds.

A recently completed 500 mile road trip netted around 37mpg, avg speed 75mph, mix of cross winds and rain.

It makes it more difficult to really see/tell, unless/until one does A/B tests with them. Over time/(the real variable are the miles) there can be a lot that influences. People normally report a loss. That loss has normally been a range of 3-7 mpg. They also report less compliant ride

So for example, while you give the data for a 500 mile road trip giving 37 mpg @ 75 miles per hour, what did you get with the other set (wheel and tire combination, etc.) under similar conditions ?

My 09 TDI, DSG is probably the closest to yours. @ that (those) speed (s) I would expect a range of 45-47 mpg (16 in biolines with bridgestone EL 400's) So right there, we are talking 8 to 10 mpg.

ruking said:

It makes it more difficult to really see/tell, unless/until one does A/B tests with them. Over time/(the real variable are the miles) there can be a lot that influences. People normally report a loss. That loss has normally been a range of 3-7 mpg. They also report less compliant ride

So for example, while you give the data for a 500 mile road trip giving 37 mpg @ 75 miles per hour, what did you get with the other set (wheel and tire combination, etc.) under similar conditions ?

My 09 TDI, DSG is probably the closest to yours. @ that (those) speed (s) I would expect a range of 45-47 mpg (16 in biolines with bridgestone EL 400's) So right there, we are talking 8 to 10 mpg.

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I don't have any highway experience, only the 47mpg -65mph trip home from the dealer on a clear day with no wind.

I also average around 37mpg for most of my daily driving around a mostly stop and go urban environment.