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When I replaced the warn out tires on the VW with these avid ascend tires I experienced almost no "new tire mpg drop".
They replaced a set of non-LRR Michelins that I ran till they were worn smooth.
Usually you lose up to 2 or 3 mpg on a car when replacing worn out tires with new ones. I think I lost 1 to 2 mpg for 2 fillups and it was back to normal, not that it ever went beyond the standard deviation.
On our other car we replaced OEM sized avid envigors, 2 at a time with avid ascends that were almost an inch taller. Eventually the MPGs turned out to be 2 to 3mpg better than ever before once we got all the tires switched to the larger LRR avid ascends.
The ultra high performance all season avid envigors were too much tire, they were real sticky and we were replacing a pair about every 20k to 30k miles, or about every 9 to 12 months.
The ascends are touring tires, have been on there for almost a year now and still look like they have all their tread.
These tires are going to last a really long time.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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