Big tires on flared 914-6s, How big of a tire can I get Options

[Qarl]

My flared six will have 9x16 Fuchs in the rear and 8x16 Fuchs in the front

How meaty of a tire can I get on the rear?

245/45/16?

According to Tire Rack, a couple of manufacturers make 255/50-16 tires

http://www.tirerack.com/tires/Compare1.jsp...ark=1&do=Search

Can I squeeze in some more meat on my backside? (Sorry, I coudln't resist wording it that way!)

Thanks!

Karl (IMG:style_emoticons/default/driving.gif)

[Don Wohlfarth]

I've been running Michelin Pilot Sport Cup 225-245 on 7 & 8 X 16's on my semi tube 914. I have 19 track days last year and 8 days this year, somewhere around a 100 heat cycles. The tires are barely worn (they were not shaved). I've fooled with hot press from 31 to 36 and the tires ocassionally feel a little greasy on the hi and lo end. Take temps pretty religously and am lucky if I see 161-163 on a 95+ day. Tires generally read 161-156-150 on average.
I was ready to go to 225 on all corners when I finally found a Michelin tire guy. (IMG:style_emoticons/default/boldblue.gif)
Tire rep said that Michelin Cup is designed for European market where the Porsche are usually heavier and have stock suspension. Said my temps were low but were not the problem. Because of lite car I was not getting a flat foot print and I said what about tire temps across tire and he said the different pressures were making the tire work either slightly under or over inflated but it had to do with the way Michelin makes the tires. The sidewalls are not as stiff but the tred is stifffer than most R type tires.
His recommendation was to mount 225-245 on my spare set of 8 & 9 X 16 wheels so the sidewall is straighter that will allow the tred to sit flatter. Then start lowering the hot pressure and I could end up below 30 and that was OK, keep lowering pressures and checking temps. Said these tires will work on a lite car. Said this setup should work better than 225's on all corners.