jstand said:
02Pilot said:
Just went out and bumped all the tires up 2psi. I'll see how they are this afternoon. Stay tuned.
I would have gone to the max sidewall rating, and then worked down until the comfort returns, or the cruise starts acting up.
Why? Running that much pressure is going to prematurely wear the center of the tread and feel like driving on wooden wheels, and if the end result is close to the recommended pressure, I'll find it faster going up than going down.
60 more miles, mostly highway at +2psi: cruise less picky but still occasionally problematic, ride improved. Interestingly, the cruise seems to kick off predictably when it gets on the throttle going uphill - I'm guessing this is the sidewall winding up. I'll bump up another couple and see where that puts me.
jstand
Dork
11/14/17 7:00 p.m.
Modern tires don’t seem to as susceptible to excessively wearing the center. But that would only be an issue if you left it that way, which wasn’t what I suggested
The main reason, is that if you start with the pressure high, then all you need is a pressure gage to lower pressure and make adjustments. That would allow you to make adjustments without having to have an air source
jstand said:
Modern tires don’t seem to as susceptible to excessively wearing the center. But that would only be an issue if you left it that way, which wasn’t what I suggested
The main reason, is that if you start with the pressure high, then all you need is a pressure gage to lower pressure and make adjustments. That would allow you to make adjustments without having to have an air source
I've had enough tires show abnormal wear of one sort or another that I'm pretty paranoid about screwing with pressures; my old E39 seemed to need about 2psi lower than spec to keep from wearing the centers out of the rear tires. Fair point on the ability to make adjustments on the fly without compressed air, though I'm figuring I'll just do my adjusting at home between commutes, so air is available.
Did another day's commute at +2psi. It's definitely better in terms of ride quality, especially when it was cold this morning. The cruise still kicked off a couple times. I'll go to +4psi all around tomorrow and see where that leaves me.
i ran old v tread style snow tires for 4 winters between an 89 mustang and an 84 s10 blazer. they were fun in the snow but horrid in anything else. Now i just like a good all terrain, its a perk to living in a flat state!
Snrub
Reader
11/15/17 11:52 p.m.
You know what I've found surprising with Blizzak WS80s and X-Ice Xi3s? The handling deficit isn't nearly as pronounced as it once was. This isn't an apples to apples comparison, but I think it is demonstrative. Tire Rack tested the two aforementioned tires and the Comp-2 (different test) on a F30 328i, with the snows at 215 width and the Comp-2 at 245. The Comp-2 pulled .89g in the dry and stopped in 79.4". The WS-80s did .87g and 88.2". Looking at another test with name brand touring all season tires, the WS-80s are actually a bit better in the dry and worse in the wet.
In reply to Snrub :
I've found something similar with the Hakka R2s on the Jeep. Despite feeling much mushier than the summer tires and being 20mm narrower, cornering grip is still surprisingly good. Not as high a limit, of course, but still high enough that you can push it a bit on dry pavement without finding that limit. They do give up enough drive and braking traction to be noticeable compared to the summers though.
Just out of curiosity (and perhaps mild desperation) I decided to shut off the stability control and see if - contrary to the manual - the cruise would function. Lo and behold, it does! So I can run in cruise with the DSC off, which not only solves the problem of the cruise kicking off, but also seems to make the overall feeling of the car more consistent and predictable. I guess it was kicking in in some form (it does things like using the rear brakes to (poorly) simulate a LSD) more often than I thought on the snows (no such issues on the summer tires).
