i have about 60 dollars roughly to spend on parts and there is a special on that ends in like 2 days so i will be ordering today or tomorrow and im not sure what to get, my front tyre is about 2 years old and i think its getting a bit slippy so should i get a new one or run it till its fkd? (im thinking of getting an eclat control or somthing like that). Also a bottom bracket is on special for 10 dollars down from 50, and a chrome sprocket for 30. im not sure what else to get that wont brake the budget, any help would be appreciated!