Wheels were balanced,tightened with air gun and got the tyre pressure checked all round.
The tyres are kumho ecstas on the front and bridgestone potenzas on the back,not exactly good ones on front but i dont really drive it hard in the bends.
The car lunges to the left when i brake and when i take my foot from the pedal it pulls back straight again.Symtoms of seized caliper maybe??

 

Are the tyres rotational? and are they on the right way round?

 

Oh Also, your topic title "WTF" is not too helpful - try making it more specific, give us a clue what is in your topic, and if you help us, we'll help you.

Thanks

 

I presume so,I got them fitted professionally.Will check it tho when i finish work

 

No probs,will know for the next time

 

 

UPDATE: Had my car up on blocks again yesterday evening and the problem is yet another seized brake caliper.Front driver side this time.This would explain why it was pulling to one side and possibly why my car wasnt as nippy as usual????

I think it was just coincidental that my caliper seized when i got the tyres changed

After stripping and rebuilding the two rear ones only a couple of weeks ago,extremely annoyed that my car is now out of action for a couple of days again,especially with the good weather were having.Whats pissing me off even more is the fact i also changed my discs and pads all round last time and now they are buggered already on the front right

I kept the disc i removed the last time and its in pretty good shape but i am concerned that its thickness will be different to the new one on the other side which may also cause it to pull to one side under braking,am i correct??Or will the piston account for the difference??

 

Its good practice to replace discs and pads as axle sets so that they should wear at the same rate. What you want to avoid is one brake disc heavily worn and the other one still relatively new because their abilities to absorb heat will be different. That might cause a braking imbalance as one disc and pad set overheats and the other doesn't.

The reality is that if you replaced your discs at the last pad change and that wasn't that long ago, you could probably get away with replacing the one disc with a single new disc from the same manufacturer. I wouldn't replace it with the one you took off the car as you've no idea at what rate the two discs will wear relative to each other. The piston in the caliper will certainly deal with the difference in disc thickness as they are designed to deal with the pads and discs getting thinner as they wear.

Unfortunately its not uncommon for a caliper piston to seize not long after a pad change as you have pushed the piston (and possibly crud) back into the bore.

 

Yes i kinda of thought i wouldn get away with it.The issue with the new disc is that there is a score line around it.its not that deep,in fact you can only really feel it with your nail,but if i re use this disc again will it prematurely wear away pads??

As for the caliper,gonna strip,clean,grease and reassemble over the weekend.Loads of copper greases.Would it be wise to do the opposite side as well?Or should i take chance with the ol ''If it aint broke dont fix it'' sayin.

Also how come i only notice the car pull on braking and not on acceleration??

 

The score won't matter if its not too deep. The pad will just wear to the same shape and eventually it will smooth out.

Take a photo if you need some guidance on whether its usable or not.

Oh and don't use copper grease on the piston or the sliders. It dries up and gets sticky. Use brake fluid as the lubricant for the piston and proper lithium high temperature grease for the slides.