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Originally Posted by Tubtub
Having an issue that noone can seem to figure out or talks about. 2019 ss 1le, winter tire setup i put together is 19x10 wheels with 285/35/19 tires x4. Offset is at 23, it's the mrr m716 replica wheels.
Issue I've been having is upon straight line hard acceleration the back end is consistently squirrelly, it don't track straight. Wtf is up? Just because I used smaller rear wheels???
Most noticeable in 3rd gear from 60-90 mph.**
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Quote:
Originally Posted by Tubtub
That's what I thought. It feels super dangerous on the freeway switching lanes , downshifting to 3rd between 60-90 mph. Just moves rhythmically back and forth like I'm cornering. Anyway word of caution for anyone contemplating square setup it sucks.
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Quote:
Originally Posted by Tubtub
I have the alpin pa4. Best you can get for winter. Also, I'm not having any issue with wheelspin. Seems kind of ridiculous that you can't safely full throttle without danger in "performance winter tires."
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Originally Posted by Tubtub
It could be 80 degrees out and dry as hell, back end still moves around back and forth rhythmically at 70 mph in 3rd full throttle. This car does not have enough power to spin the tires on dry winter days going 70.
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Quote:
Originally Posted by Tubtub
I think that people are not understanding what I'm saying. I understand everything your saying alpha but.. Does anyone with actual experience with winter setup with oem sizes of wheel/tire confirm this is a normal experience? I'm pretty sure it's an issue. I even get it going 100 mph under full throttle, warm dry conditions, only with my winter setup. I'm not an idiot I realize the compound is softer, higher profile tires slightly, yes there will be more tire flex. But not to the point where my back end pretends it's cornering in a straight line.
ANYONE CONFIRM they have oem size wheel/tire combo with winter tires having my same issue? Are you afraid to accelerate under full throttle at 70 mph as your car back end sways back and forth???
I already got an alignment. I think it's because I chose 10" rims and 285 tires for the back and it is an issue. I'm not dense.
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1. What temperatures have you been driving in with this winter setup? You mention 80F, which is way too high to be loading up winter tires!
> I can tell you, most winter tires, when you get about ~40F, they begin to become "squirrley" or nervous when put under heavy load. Certainly above 50F - I've seen this, for myself, amidst warm-spells in winter (going from 20's to 30's to 50's to mid-60's and back down to 30's over the course of two weeks; same car, same winter tire). Their compounds are simply NOT designed for that environment. They are designed for sub-40's. They only need to be "safe" to drive on above that temperature range. In addition, the tire construction is very different than a summer tire and can even be so compared to an "all season" - softer sidewalls, deep tread depth, many sipes, channels and grooves (these three things are there, functionally, to evacuate water, slush and snow and to generate "biting edges" on ice but at the expense of ultimate dry grip) and the belt packages may be placed to allow more tread surface flex.
2. What kind of air pressures are you running?
3. Is there anything else you've changed with the car when you switched to the winter setup?