Carl ..... I have to say that would be a real turn off for people like me entering nationals. I have my tires glued up for Oz ..... all sets are from previous meetings (2 x glued and not used and 1 set that have done 1 run and are still as new due to the track surface being so kind). If I need to go outside these I'll have to go home as I have no money available for tires at this meeting.
Also what about drivers who are "shop supported"? Not only would forcing the drivers to buy from a single source hurt their wallet (lets face it prices would go up) but also the shop which supports them as it's a two way street. For most racers they spend far more a year on tires than they do on all other items cumulatively so if you took those £££s out of the shops everybody would suffer in the long run.
If it had been as you suggets at the start of the year then I'd not have entered any national other than my home track ..... I think that would be the case for quite a few others. If that happened then the national series would be the F1s racing and a group of randoms "making up the numbers" each meeting ..... .if anything would kill 1/10th OR that would do it!!!
I can see the merit in just about every other post in this section other than any of yours ..... with all due respect and not wishing to upset you people reading your posts could be forgiven in thinking your a millionaire and if you have to put a new set of tires on each run you'd be prepared to do just that!!!!
One of the reasons I like 1/10th OR so much is that there is more power than we can use and thus having super fresh cells and motors is less of an issue keeping costs down to a level where people aren't "priced out".
Just my honest opinion.
I like the idea of limited number of sets as it takes the wallet out of racing a little more. With the price of fuel and the cost of tires racing is bordering on being a non-viable hobby for many these days.