my myvi tyres was 4 year ++. Now, even when i driven down to the even road, i start to heard some sound come from the old. i could not explain it, it sound like something stuck on my tyres or it is actually vibrating.

1) I am very worry and i guess this could be cause by types crack? balancing or alignment problem... or brake pad?? Anyone can help me?

2) so, i also plan to change tyres. i was been offer 145 for silverstone, 170 for goodyear in ampang for 175/65/r14. This is reasonable?

3) my all 4 tires also seem in same botak condition but i plan to only purchase 2 for front and keep the best 2 for back. This is wise move?

absorber mounting? This is urgent and expensive problem? Bcoz it is over 4 year warranty period, thus i am think whether go for perodua sc or normal workshop?

Thanks, can help to inform me how much it normally cost?