18 X 10's on a teener?, anybody tested? Options

[jjackson]

Sleeping at the wheel on Prepared rule changes.Sponsors car purchased 18 X 10s all the way around for their 944.Switching from the bias ply on 16s and going to A-6 in the 285-30-18 size.24.9 inch tire with 10.6 contact patch.
We have previously ran the car on the 275-35-15 - but only on 8s -never stretched out properly.
Always wanted a few more mph with our current gear setup-this would do it.
Slightly larger contact patch-Double the amount of competitive runs from a set of tires.
Have got this years 16's-for nats-covered in the corner-but have won three more tires that haven't been collected.
Just thinking out loud and looking for input.
JJackson (IMG:style_emoticons/default/stirthepot.gif)

[J P Stein]

There are a number of things to consider.
IMO the A6 is better on asphalt than R35 slicks...tho I have no proof of this.
On concrete I think R35 slicks are better.
A6s are heavier. I think there are 18inch wheels that are as light as 16 ....but bring lots of cash for em'. Is your camber is adjustable enough to get what the A6s need without spending/modification.
The W/T combo will raise your ride height/CG. No big deal if your ride height is adjustable enough to compensate.

It's a lot of money to get a slightly larger contact patch and more speed in
gears (at a loss in acceleration) that may or may not pay off on the clock.
It's kinda like switching to Avon tires at about 100 bucks a tire more each. They may be quicker at the cost of fewer heat cycles and no contingencies.

A DP buddy is trying Avons while another DP buddy is letting him do the research...but watching.(IMG:style_emoticons/default/biggrin.gif)

I've never had the disposable income to test everything I'd have liked to.