Your Thoughts on Mandating 200+TW "Street Tires" in Improved Touring?

[dickita15]

my experience is the wheel cost is not significant, when we in IT7 went to 15" Nittos from 13" Hoosiers the cost for 4 wheels and tires was about the same price as a set of Hoosiers.
the way we structured the rules in New England is you can run any tire but you only get year end points on Nittos. That way the new guys can race with the shit they have laying around.

even with my positive experience the main reason i support this is having some differentiation between class. there is so little difference between T, ST, Limited Prep Prod and IT that it just makes sense to me to have classes that offer a different experience.

[Flyinglizard]

I had IT cars when this was first considered , about 6 yrs ago. I now run Prod cars only . I really have no dog , (I miss my Dog)
These are my observations ;

I have been racing on 200 TW tires for 8 yrs. The smaller sizes can get greasy when over driven and asking for repeated turns. Like Roebling road on 205/15 tires. The answer is to use large tires and keep the outer edges cool. The2800# /300WHP , truck runs on 315/17 rears and 255/17 fronts. 10.5 and 9 in wide rims. They last as long as 40 hrs and as short as 14rs. The brand matters less so then the size/loading/track conditions..
Considering that, the optimal tire is large and the wheel larger . 245/40/15 are run on 8 or 9in rims. For a SM style/ weight car.
I have no idea how IT would allow wide wheels. and keep them inside the fenders.

I think the right way for IT to use these would be to have a transition year with some weight adjustment for the Hoes and the 200s. I have run the same cars on both tires and the delta is about 6% weight turns out pretty close. ( at 110HP2200#)
Maybe remove 3% from the 200 cars and add 3% for the Hoes. I think the Hossiers will cover the weight even at 6%. But that can be changed or the 200 can be mandated after a year.

13 option ;https://simpletire.com/federal-p255-...0aAkEaEALw_wcB

[XelderX]

That's also a very good point I was thinking about yesterday, but didn't get around to posting before I went to sleep. The new crop of 200tw tires don't like to be pinched on narrow wheels. They perform best with proper width rims. I think most people would be fine with the IT allowed rim widths already in the rules since most of us are restricted by the contact patch/fender rule first anyway. My car can fit a lot of tire up front legally, but eventually it's depreciating returns as it's more rotating weight and more drag.

[Flyinglizard]

Letter #24914; For a one year trial period ,Please make 200 TW tires competitive by reducing weight 5% and allowing a wider wheel by 1 in per class .
For 2019 add weight to non 200 TW tires of 5% while keeping the prior 5% discount for 200 TW. This allows current tires to be run out and promotes the 200 tires.

[downingracing]

Weight break won’t work for many cars that can’t currently make min weight. And my ITA car is close to 5% over weight as is, so I won’t get any slower running Hoosiers (since I’m running them now).

[Flyinglizard]

Then please post a letter stating that and maybe weight should simply be added for the transition year.

[downingracing]

Already sent my letter against. Not interested in a transition year.

[jjjanos]

even with my positive experience the main reason i support this is having some differentiation between class. there is so little difference between T, ST, Limited Prep Prod and IT that it just makes sense to me to have classes that offer a different experience.

Then combine T, ST Limited Prep Prod and IT into a single category. Instead of 45 cars spread across 15 classes, you have 45 cars spread over 5.

We can equalize performance by giving mods points. Too many points and you move up a class.

I mean, if we are going to be arguing about reclassifying cars because low HP cars are going to be killed by torque hogs, we might as well do a full nuclear exchange in terms of debating the finer points of whether an engine swap is the same as running Hoosiers versus TW200. I mean, what could go wrong?