havnt had much luck since owning my horn when in the bad rain we had went down a massive pot hole put the tracking out then had to get two new front tyres and now just when to check my tyre pressure and the back passenger side is 15 psi so i think i need another new tyre and have a slow punture my local tyre place wanted £150 each for nero zero p tyres so i got toyo t1r instead on the front at £107 each so dont really want to pay that again

where would the best place to buy tyres and have them fitted too ?

thanks
in advance matthew