khomo to michlin energy saver swap
 

i have over 6000 miles since the swap from a set of very bald kohmos (tire cords showing on two of them) so extremly worn out. i expected a drop in mileage from all i read about installing a brand new set of tires. didnt happen! from the first tank till present absolutely no drop. i think they might be helping just a little. i inflated both kohmos and michilens to 50 psi. after a few tens of thousands of miles the proof will be in the fuel logs i guess.

Do you know what model kumho's were on it before?
I always like hearing tire feedback from those of you running higher mpgs where tire differences should show up more readily

Well, when I went from my 185/65R14 to 165/65R14 I went up 8mpg on the low side, and 15 on the high side. Tires make a huge, huge difference in mileage. Weight and RR I think play the biggest role, more so then actual tire size.

Edit: An example today, round trip going to work, on a good day when I hit all green lights I used get 51mpg max. Today, I got 54.7 and I wasn't even trying, hit most red lights and stopped to get something to eat.

I haven't used them recently, but at one point I had three cars on Kumho's (all dealer fitted) and they were all rubbish and frankly downright dangerous in the wet.

Not surprised that new Michellins beat/match them out of the box.

Are you correcting for the size difference? 10.8% reduction in actual miles driven.

sorry 2000 , i dont remember the model of the kumhos, they were on the car from the dealership, they were ok tires as far as traction and wear , i got over 50 k out of them. but i love these energy saver a/s so far, ill post about them after a few more tens of thousands. of miles.

30k on michelin energy savers
 

ok i now have 30000 miles on the michilen energy saver a/s tires. i have seen a slight uptick in mpg's. But not the 3 or 4 mpg the tire articles say. i figure i am getting between one and two more mpg. But the tires are great! quiet,comfortable, and they still look new! no real noticable tread wear. after 30k miles, i will buy a new set of them if the car lasts that long.

Is this on your Mustang? If so, this could be dangerous. Overloaded tires have been known to fail. Watch them very closely. It takes only a couple hundred miles between the first signs of a tread separation to a catastrophic failure.

First signs = bulges or a vibration.

Catastrophic failure = the tread and top belt come off, damaging the fender area, sometimes losing inflation, and the vehicle could go out of control! People have been killed when a tire fails like this.

Those tires would be on the 1st gen Insight. OE Re92s in 165x65x14 on the Insight bumped the mpg by 7, almost exactly the opposite of what I experienced on my 1st gen VX when I replaced the original tires.

regards
mech

My old Insight Turtle (Dr. Horrible in its new life under my son's ownership) has Michelin Energy Savers on it, and my new Insight Ron Burgundy has OEM Potenza RE92s, and I honestly don't see a difference in mpg, feel, etc . . . . . and since my son and I keep swapping places in the top ten Hybrid slots, I don't think the tires do as much as some people claim, unless maybe they're swapping some off-size for OEM.