Hmmm. Think we need Phil or some other car guy in on this. Not familiar with Subaru's, and I'll buy the 5" if you insist, but my SUV (4-Runner) has a whole lot more than 6" - I'll measure tomorrow when I drive it next - and it has flat, heavy, skid plates underneath to protect vital bits from boulders etc. More to the point, real snow/mud/rock cars have transmissions, spring rates and suspension aimed at their task.
I don't think many people encounter boulders and for 99% of the driving anyone will ever do on earth, a FWD civic works. You are now comparing a vehicle designed for mild off road to a super car, impressive. How often while driving to ski do you suddenly decide to go rock crawling?
Don't think the Lamb's is optimized for ploughing through slippery crud and muck. The whole thing looks like he watched Batman Begins one too many times, got to thinking the Lamborghini/Hummer lovechild Batmobile was real.
And as far as I know, you're wrong about tire width;
And as far as I know, I never claimed wide tires gripped better, just that traction wouldn't be a problem, you came up with that in your head. My words were "Traction wouldn't be a problem on snow packed roads, it's not like skinny tires can bite through pack and hit the road, and with the crazy width of the tire you have a lot of room for studs/sipes/knobbies."
the more actual SA in your contact patch (whether from width or from narrower tread grooves), the better grip on dry pavement and the worse grip on slippery surfaces. (Which seems to define "pack.") Or so sez my R&T mag. I'd assume the more weight you have concentrated on the smaller the patch, the more penetration. Other ideas?
04-07 sti: 5.7''
96-02 4runner 11'' newer ones have 9'' I think.
I would be interested to see how studs perform on wider tires, the extra studs might offset the PSI difference. Same with no actual penetration, like a packed down road with studless snows. One must remember that rubber sticks to ice reasonably well, it's that pesky layer of water that gets in the way.
About to start reading forums.nasioc.com/forums/showthread.php
And the PDF with ground clearance.
Edited by karpiel - 4/20/2009 at 03:36 am GMT