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Well i had 65,000 on my factory supplied bfg ta 245/75/17 tires. I settled on 285/70/17 as a reasonable "plus" size. I was getting stuck with the 245s in the field, but commute at 75-80mph so didnt want something too big. I ended up with bfg ta ko2 (e-range)
So far i like them- they look good, and fill the wheel wells better. They ride super smoth no vibration, very quiet except under hard acceleration makes a "grippy" sound. The voids in the tire are larger and dont seem to hold peeples and gravel near as bad as the stock tires did (although around the 50,000 mile mark they quit picking up gravel also).
The bad;
Mpg dropped from 13.5 to 13 over 2 tanks -- part of that is probably odometer error from different tire size?
Feels a little "squishy" in turns compared to stock.
Does not track as well as stock tires
3.73s with the 5.4 i was already undergeared now with the taller tires i really am. Thinking about 4.56 gears eventually
The bad;
Mpg dropped from 13.5 to 13 over 2 tanks -- part of that is probably odometer error from different tire size?
Feels a little "squishy" in turns compared to stock.
Does not track as well as stock tires
Check your speed with a phone app and your speedometer, if different throw any calculations you have out the window with the new tires. With my experience new tires will never provide the same mpg as old worn tires. Worn tires are at their hardest part of tire compound exposed and have the least friction on the road.
Squishy feel in turns is due to the larger sidewall of the tire flexing, and the new tire having a deeper tread. When the tread pattern is worn there is less deflection resulting in better handling feel. This is why most track cars use slicks or near slick tires (unless in rain).
Many things affect the tracking of a tire, tread patterns, sidewall, depth of tread, etc.