interesting.You may not be getting weaker...
Years ago tires started having a new layer mandated by the .gov due to the big Firestone/ Explorer deal. Its a 0 degree layer of cord between the tread stock and belts, and while it does alot of good things for the tire it also makes it a bitch to plug.
These mandates were weird and phased in certain specs, eventually covering everything... but it seemed kinda random. Now everything gets this stuff, but older shit may not have it. Id bet there's still some on the road that dont have it.
Basically, to stick a plug in a ching-chong stock Civic tire today you need to use the same force you woulda used on some 35" BFG/mt 10 years ago.
:the_more_you_know_flying_star.jpg:
These are two year old falken summer tires with kevlar and all the shit in them, so I assume that's a big part.
made in j a pan official.
They're done after this season anyway. got noisy AF at the end. Like make you think the car is broken noisy.