I think CM need to know this before they go playing around with the springs to fix this bug, because it isn't exactly what we all think it is. I've spent about an hour testing all variables, springs at 11, 10, 9, 6, 1 and some random ones also, and all under the exact same conditions on the same tyre.
Basicly, 11/11 for spring rate isn't just a rare conicidence in setups that means you're instantly 3-5 seconds faster. 10/10 will do pretty much the exact same thing, same for 9/9, the lower the numbers, the less dramatic the insane amount of grip. So just banning 11/11 won't fix it. 1/1 will give you huge understeer, but good tyre wear, where as 11/11 will give you insane speed and grip, but bad tyre wear.
It should no longer be reffered too as the 11/11 glitch, because it's not just 11/11 as I said earlier. It's basicly the whole spring setup that isn't coded correctly.
I think the way to fix this is too adjust the way springs effect the car. They have the basics right. 11/11 will make you faster but it gives you bad tyre wear, and the oposite for 1/1. That part is right, what isn't right, though, is that the 11/11 far outways the bad tyre wear. Theoretically, if I ran 11/11 the whole race and my mate ran 6/6 the whole race, and we were the same pace usually. Then I will stretch a gap out due to my pace, but his good wear will close that back up again at the end of a long stint. Unfortunetly that's not how it works, the 11/11 is so fast, it doesn't matter how bad your tyre wear is, no one will ever catch you. So really, all that needs to be done is, half how much faster 11/11 will make you, that way the tyre wear will make everyone want to go with a different setup.
I hope this helps you devs somewhat, because frankly, this is ruining the game, and like many others, I want it fixed.
- going to take me a day to get it all setup (i.e. my wheel and any stuttering issues) and get the feel of the new handling system. Looking forward to coop with you 
