toyota said i need new tires 2 of the tires are 1‘s? and the other 2 are 3‘s?
In addition to whats been said / written u shud be using both brakes symaltaniously unlees your just reducing speed then it's rear brake only. braking on a bike is different to that of in a car. Feather 'touch' is good practice to get in to where as with a car it's bigger heavier so more pressure required etc. Practice doing emergency stops car parks are good places but watch out for loose gravel etc.
Replace them all if you can if not get the 1's replaced ASAP.
Anything 3 or less is getting really bald for safety I would change them I work with tires and even recommend them at 5 32's Jim
I am to assume that you are referring to 32nds of an inch if so yes they are bad, federal regulations on tires is 3/32 and 1/32 is just plain bald you should be able to check your self as tires have whats called a tread bar, its in-between the tread and if that bar is even with your tread then replace your tires. other then brakes your tires are very important.
