gt avalanche 1.0 2007 disc questions

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Hi, i just got one of these second hand off ebay. Theres a small chip on the frame but i guess this can be covered up with paint? Also the front wheel seems to be slightly out of line. The disc seems to rub a bit when i spin it. My mate reckons its just the tyre thats a bit wonky, but im not so sure! The tyre has wmb written on it. Is this correct? Also when i put the tyre on i tightened it up until i could close the clip with a fair bit of force. How tight is tight basically as i obviously dont want the wheel falling off, or to break the clip. The bike was listed as only ridden twice, but i didnt get any paperwork with it. Should i have a warranty for parts or some sort of guarantee with the bike? Also on the front forks it has suspension lockout. If i dont do it up fully would this give me less traction on the suspension or is there just 2 settings. i.e locked and unlocked. Sorry for all the questions, some of which might sound a bit stupid. But im new to mountain biking and wanna make sure im gonna be using my bike properley and its all A ok. Cheers. Si.

nicklouse

the lever should leave a good impresion on the plam of your hand.

if the disc is still rubbing after a good ride then realign the caliper. Nothing to do with the tyre or rim but the brake caliper.

Just use it for now as these things do actually sort them selves.