A83

My gas guage seems to be stuck on half a tank no matter how much gas is in the car. normally when it’s full it’s on 3/4 of a tank and when it gets near empty it’s around 1/4 of a tank I was living with that, but now it’s stuck. I don’t know if it’s a fuse , the guage or float in the tank. Oddly once in awhile when I start the car Iit will go to full then back to 1/2. not a mechanic any advice would be appreciated thank you

I have some cooper white wall tires on my 1983 Avanti and they're starting to crack even though they Don't have much mileage on them Are cokers any good Any advice would be appreciated Many thanks A83