I quickly figured out that the PP system tells you NOTHING about the handling & performance of the car.
You can have 2 cars, same pp, wildly different handling, wildly different power, wildly different torque...  The difference with tires is diddly bop compared to all the other differences.
At least tires are something you can restrict to!
A good thread I found about the PP rating system flaws is here:
https://www.gtplanet.net/forum/showthread.php?t=196351
Personally, I have not been able to glean why you can't set restrictions with 
ALL the options.  
Like if you host a race, you should be able to say the cars have to have a 475pp cap, a 300hp cap, a minimum weight of 1200kg, and sports soft or less.  
All at the same time!
(just taking numbers at random - that would be a pretty weird set of cars haha)
Even better would be if you could restrict for light cars, like have a MAXIMUM weight...  restrict for drivetrain and class of car, and even tuning.  This is possible because they do it for the seasonal cups & the aspec stuff...  So why is it not an option when you host a race?  
MYSTERY!
So most online leagues seem to restrict themselves...  and sometimes some restrictions are an honour system.
	
		
	
	
		
		
			However when driving against a experienced player racing softs give them a significant advantage because all the advantages from above are combined with propper tuning and experience.
		
		
	 
I've thought this same thing...  Yet people always seem to say that racing tires gives newbies & especially 
"bad drivers" an advantage.  I've never been able to understand that since, if EVERYONE is on slicks, doesn't everyone get the advantage?  And the better drivers will still have it on the newbies...
??
It's as if people think bad, unclean, cheater player types somehow suddenly become invincible on racing tires, but if you make the dirty tricksters put on sports tires, they're suddenly going to behave themselves?  
I've never understood that reasoning, and I've never seen it explained.  It's just handed down as a tenet that unruly kids can't bunt, block, and cheat unless they're on slicks.  LOL  And that's totally not true.  I've seen plenty of unclean dirty tricks on lesser tires!
At least it's what it seems like people are saying.  
