Looking at purchasing a new rear tyre. I’m new to trials and have realised the bike I’m riding has a tube fitted in the Michelin rear x11 tyre. It’s rounded it edges and looks like it’s previou been turned round but i’ve still got quite a bit of tread. I’m really struggling to get grip on wet ground. Would a fresh tyre make a big difference? Was looking at Pirelli tyres as they’re a lot cheaper (MT 43 ) are they ok or should i pay a bit more for a Michelin. Thanks