308 pulling to the side under braking

Yes, but it's also possible that the piston(s) is frozen/corroded into the bore. Easiest diagnostic thing to do is just raise each wheel off the ground and have an assistant gently press the brake pedal (engine off) while you manually turn the (raised) wheel to see if the brakes do, or don't, add drag at that position. Is yours a neglected 308 that has never/rarely had the brake fluid changed, or has it had a long period(s) of disuse?

PS Update your Profile...

 

First thing I would do is check tire pressure.

 

While you are there shake and tug on all the suspension components. Is the steering tight, consistent, and accurate?

 

I experienced this exact same thing.

Had to get the calipers re built & cleaned, there was dirt in the system - most likely from deteriorating piston. this is a serious safety issue - take care of it soon.

Do the annual flush & fill on brake fluids... it really helps.

 

I would recommend the same along with the obvious tire/brake issue. Sounds like a bushing may likely need to be replaced. I've always had more linear feedback when components that are symmetrically engineered, are replaced in tandem with one another. Something that is often an oversight due to the economics of the original issue.

 

I'm not very familiar with the design on the 308 but I would say most likely. Definitely replace them when you can.

 

If they're original they need to go.

 

Same issue until caliper rebuild and new rotors and pads on all four corners. These ATE brakes need TLC after so long in service IMHO. Must also add that suspension bushings where also changed so can't be definitive on cause which of course makes this post useless. Sorry, it's early in the morning and only one cup of coffee so far.

 

No coffee at all so far today, but I think I can make it to the submit button before I collapse...

I also had the same problem, and it took a caliper rebuild and rotor and pads to make it go away. I did not touch my bushings, so I know it was the brake work that mare the difference. (I also replaced the brake hoses at each corner, but I'd consider that de rigeur for the caliper rebuild)

 

Agree! With all of it including hoses.


When all else fails read the damn manual. - wife

 

If you have original hoses I would replace them 1st and see what you get before I start removing and rebuilding calipers. Also if you drive on a flat smooth road at say 30mph what happens when you lock up the brakes (panic stop).

 

Sticking caliper, I had the same thing however with a fair bit of use it came round and is absolutely fine now.