mcloven
Active Member
looking for some pics of 275 60 20s, preferably on oem wheels lifted and non lifted.
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What size are you running right now?looking for some pics of 275 60 20s, preferably on oem wheels lifted and non lifted.
Most likely he's running stock 275/55/20 and wants to gain a little more sidewallWhat size are you running right now?
Going up 1” isn’t gonna do shit to the speedo. Maybe 0.5mph difference. I went to 35s and mine was off by maybe 2mph.What your trying to accomplish with a half size on the aspect ratio or in laymen's terms go from a 55 to 60 might do what you want, but will throw off your speedo reading, and raise your gear ratio a smidge. You should be ok on clearances front and rear. What year is the Expedition? Always post that info along with motor size, in your case only the year just in case things are different between years. One last thing although minor, going to a 60 aspect will make your SUV slightly less stiffer going through corners, as sidewall is spongier. On the plus side, it should be nicer over bumps/potholes.
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Going from a 275/55-20 to a 275/60-20 will change the speedo by about 3.4%. So, if your speedo is correct with the 55 aspect ratio tires, after the change to 60's, 70 mph indicated would be 72.4. This is totally by calculation and different tires will vary a bit from the strict height calculations. But, it will be close to that; so a small difference.Going up 1” isn’t gonna do shit to the speedo. Maybe 0.5mph difference. I went to 35s and mine was off by maybe 2mph.