cgomez

Agreed. That's one of the downsides of the R-Comp or slick tires we all prefer to race for faster laptimes, but just imagine how much more fun our Race videos would be if we were forced to run in the Stock classes with true street tires (Tirewear ratios of 200+)?

FredC

That would be awesome!

Larry Herman

It would separate those who have real car control from those who don't.

RJFabCab

Vintage racing rocks and Spa is simply gorgeous!

Remember those days when 911s were small, lightweight cars?

Bryan Watts

Maybe, maybe not. Street tires tend to have a more forgiving grip curve than racing slicks from the data I've seen. Slicks tend to be far more peaky in their grip generation and much more sensitive to slip angle. i.e. harder to balance at the limit and with a greater dropoff when the limit is exceeded (which makes recovery harder).

race911

Radials only? Or what bias plys have you run? (Wish we had data 25 years ago........)

333pg333

Makes me wonder how many retirements they had due to over revving. It is easier to control than it looks and we sit here squirming as we're used to modern tyres. That car seemed to have trouble going straight even. He clearly felt confidant that his competitors were watching their mirrors also. Some tight moments for qualifying.

Bryan Watts

Yeah, sorry...I'm speaking of grip curves I've seen of various radials in relation to the discussion of switching from running modern R-comps/slicks to running on street tires as cgomez mentioned. I think such a change may have the opposite effect, actually making it easier for ok drivers to keep up with good drivers.

I haven't ever seen a grip curve of a bias-ply on paper, but I drove on bias-ply Goodyears for a few years in the old Formula/Star Mazda cars enough to draw an imaginary curve in my head. They are worlds apart from a radial slick regarding how they make grip. It's too bad this sort of data isn't easier to come by. Tire manufacturers seem to keep this sort of info really secretive.

Robert Henriksen

Hey, Danny! Where've you been? You probably have your hands full this month w. the games in town.

cgomez

This is true, for sure by feel (less grippy tires are more controllable while sliding). I think the data (on "sliding easiness") can be simplified as the difference in friction coefficient in Static friction (grip "on rails" or low slip angle) and dynamic friction (grip while sliding). Both compound and tread design matters. For example, I drive my GT2 with winter tires (december through April) and you can hold ludicrous amounts of sideway slip while being much easier to control (The sliding grip up to 10-15deg doesnt change much) than say the PSCs or hoosiers.

I agree with you that this probably makes those "lesser" tires easier to slide, but managing those high slip angles with precision (and to the limit of what the tire can manage... seems like up to 20-30deg in those old tires) requires a LOT of skill too. What I'm sure we all agree is that it looks a LOT cooler than our Hoosier-clean fast laps.

DJF1

Yes indeed and with a new son that joined the family in December

Hope you are doing well my friend.

AllanJ

Congrats Danny!

Flying Finn

+1

I loved the lap around Spa sliding around, looked like a ton of fun and was pretty damn fast, awesome driving!

Robert Henriksen

Congratulations!!

IcemanG17

WOW.....just WOW