Optimal tire pressure: Kumho MX
I run 34 cold anything higher does nothing. Also, my MX's were slippery for the first 1k miles and also remember that this tire has a lot of tread on so you will feel the tire "squirm" I also feel that this tire like a lot of negative camber. Once I got the UK allignment done, the tire performs awsome. On the track, I will start at 30-31 psi since this tire heats up very fast. My SO2's were more temp stable.
The sidewalls on the MX are fairly soft for a high performance tire. I've never run them on the track, but I would image you would need significantly more than 30 psi cold for track use to keep the tires from rolling over and deforming.
I just started with 35 cold psi - great for daily driving, not so good for sprited driving. I'll probably drop the psi to 32 cold and try again this weekend.
I'm running 215 f 255 r on my AP2, so far at 35 psi, what I've noticed (compared with my 3/32 r RE050's) over the first 500 miles is slightly lower mpg (20-30 miles less per tank or so highway, but it may be summer fuel and stickier rubber) , much better ride quality, quieter ride, tires chirp more (RE050s didn't chirp at all, they just melted away) - impending loss of traction is much better communicated, but the tires chirp constantly when cornering on rough surfaces - guess I'm just used to the quiet Bridgestones.
Once I drop psi I'll see if the car settles down.
I'm running 215 f 255 r on my AP2, so far at 35 psi, what I've noticed (compared with my 3/32 r RE050's) over the first 500 miles is slightly lower mpg (20-30 miles less per tank or so highway, but it may be summer fuel and stickier rubber) , much better ride quality, quieter ride, tires chirp more (RE050s didn't chirp at all, they just melted away) - impending loss of traction is much better communicated, but the tires chirp constantly when cornering on rough surfaces - guess I'm just used to the quiet Bridgestones.
Once I drop psi I'll see if the car settles down.
Originally Posted by Voodoo_S2K,Jun 5 2006, 03:59 PM
The sidewalls on the MX are fairly soft for a high performance tire. I've never run them on the track, but I would image you would need significantly more than 30 psi cold for track use to keep the tires from rolling over and deforming.
Also, the sidewalls are not that soft. I had to remount them on new rims and it took 2 of us the fit it to the rim with the newest equipment. My installer stated they were as stiff as runflats. But at full tread, it does feal softer since there is a lot of tread. At the bars on mine it much stiffer. I will be buying these again since if I go with the RE01's, I will get about 4000 miles out of those when I will get about 7500 miles out of the MX's for a lot less money and slightly less grip.
Maybe you need to go faster
...JK
Well, don't know what to tell you, but compared to the SO-2's, RS-2's, and RA-1's that I've had on my car, I found them to have the softest sidewall and the least amount of grip. I also mount and balance my own tires. If you want stiff, try mounting a set of rally tires, now those are stiff.
I run 2 degress in the front and 2.6 degress in the rear and had no problem rolling them over and chunking them, but I don't expect the average driver to push them as hard as I do so I do recommend them to people looking for a good performance tire on a budget, however I rate the Hankook RS-2 better for a little more.
IMO
...JKWell, don't know what to tell you, but compared to the SO-2's, RS-2's, and RA-1's that I've had on my car, I found them to have the softest sidewall and the least amount of grip. I also mount and balance my own tires. If you want stiff, try mounting a set of rally tires, now those are stiff.
I run 2 degress in the front and 2.6 degress in the rear and had no problem rolling them over and chunking them, but I don't expect the average driver to push them as hard as I do so I do recommend them to people looking for a good performance tire on a budget, however I rate the Hankook RS-2 better for a little more.
IMO
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