Originally Posted By: bepperb
Originally Posted By: Bladecutter
Originally Posted By: bepperb
The low profile tires on an IS250 will have a lot less snow traction than your CRV.
I don't think that's correct.
Profile helps with ground clearance, not traction.
If you took the same exact model snow tire, say Blizzak WS-70, and stayed with the same width and same wheel diameter, changing only the profile, and kept it on the same vehicle, I highly doubt actual traction is going to increase due to the higher diameter sidewall.
BC.
Well, you might want to read through this if you find it interesting:
ftp://203.199.213.36/i.%20Department%20W...article_002.pdf
But the quick takeaway is that snow traction is affected by profile with the optimum being a surprising (to me) 70% at least in this test.
But honestly the IS has a 40 aspect ratio tires. To think that would do good in snow is absurd. I'd be terrified of potholes to say nothing of the traction.
Good article! I'd love to have access to articles like these on all sorts of automotive topics. I'm glad my hunch is backed up by real science!