Brake pulsation

[Jonathancilia]

So recently i installed a set of alloys 14 inch on my saxo, they have almost new tyres on them.

On the rear of the car i have a slight very minor wobble at high speeds that i feel in the seat not the steeringwheel. I believe that the rim has a very minor bend. Im not too worried its not very noticeable.

The thing is this, i know that my rear brakes are shit they are all grooved even the drums. Before i installed the new rims i didnt have any pulsation but after i installed the new rims i now feel a pulsation when i brake from say 80km/h in the seat of the car. Could this be caused by the slightly bent rim?

Sent from my VFD 510 using Tapatalk

[marrick]

The wobble would just need the wheels balancing on the back mate

Sent from my Pixel 2 using Tapatalk

[Jonathancilia]

Im not so sure because when i spin the wheel i can see a minor bend in it, its not tracking straight

Sent from my VFD 510 using Tapatalk

[Jonathancilia]

But still how can the brake pulsation issue reveal itself now? Before i installed the new rims the drums were already grooved and braking was smooth

Sent from my VFD 510 using Tapatalk

[MartinObviously]

The bent rim will be making the drum "shake" very slightly. so you may feel that in the pedal.

Quick test would be to put your other wheels on and go for a drive. If it goes away you know 100% it is the wheels.

[Jonathancilia]

Yeah i thought about that possibility, but its fastened by the axle nut and i rotated the brake drum its pretty straight, could it still possibly wobble because of the wheel ?

Sent from my VFD 510 using Tapatalk

[marrick]

But still how can the brake pulsation issue reveal itself now? Before i installed the new rims the drums were already grooved and braking was smooth

Sent from my VFD 510 using TapatalkTyres wouldn't really make the brake pulsate, I would work in narrowing the fault down.

Swap your wheels front to back and see what happens, if the wobble is felt through the steering wheel rather than the seat then they definitely need balancing.

Then put your old wheels on the front, keep the 14" alloys on the back and see if the wobble goes and your brakes feel okay. If your brakes are still crap pur your original wheels on and again see what your brakes are like.

IF the brakes are terrible with all of your standard wheels back on then you need to rule out warped discs, best way to do It is run it over some brake rollers (and MOT test station has them). You don't really get issues with warped drums tbh.



Sent from my Pixel 2 using Tapatalk

[Jonathancilia]

Ok then tomorrow i will swap wheels back to front and see what happens

Sent from my VFD 510 using Tapatalk

[marrick]

Keep us posted [emoji106]

Sent from my Pixel 2 using Tapatalk

[Jonathancilia]

I used spacers with the wheels and extended bolts, this doesnt make a difference right?

Sent from my VFD 510 using Tapatalk

[marrick]

I've got those on my saxo and there fine, they are decent ones and not home made ones right? They have to be perfectly balanced. Again that wouldn't effect your drums.

Is it definitely the back drums causing the issue? When driving pull your handbrake SLIGHTLY, that will operate the back brakes only... If it judders then it's the back, if not and it's juddering with your foot brake it's the front

Sent from my Pixel 2 using Tapatalk

[marrick]

I've got those on my saxo and there fine, they are decent ones and not home made ones right? They have to be perfectly balanced. Again that wouldn't effect your drums.

Is it definitely the back drums causing the issue? When driving pull your handbrake SLIGHTLY, that will operate the back brakes only... If it judders then it's the back, if not and it's juddering with your foot brake it's the front

Sent from my Pixel 2 using TapatalkThat goes without saying, best done on private land with no traffic around etc....

Sent from my Pixel 2 using Tapatalk

[Jonathancilia]

Yeah when i apply handbrake i feel vibration i tried that and yes they are quality wheel spacers

Sent from my VFD 510 using Tapatalk

[marrick]

Yeah when i apply handbrake i feel vibration i tried that and yes they are quality wheel spacers

Sent from my VFD 510 using TapatalkDefinitely try putting the original wheels on the back and see what happens. It's not something simple like the drum not seated correctly? I'm assuming the drums still had the little grub screw that holds it in place when the wheel is off?

Sent from my Pixel 2 using Tapatalk

[Jonathancilia]

So i went outside and replaced the said bent wheel with the oem wheel and its abit better now, it still pulsates but its less

Sent from my VFD 510 using Tapatalk

[marrick]

Hmm strange, what if you change the other rear wheel? Does it stop pulsating?

Sent from my Pixel 2 using Tapatalk

[Jonathancilia]

I didnt check but both rear wheels have a slight wobble when turned

Sent from my VFD 510 using Tapatalk

[Jonathancilia]

Can this be fixed with wheel balancing ?

Sent from my VFD 510 using Tapatalk

[marrick]

You wouldn't be able to see them being out of balance to be honest, but I would get them balanced definitely. The allot wheels do have the correct size centre bore right? And definitely sit flat against the drums?

Sent from my Pixel 2 using Tapatalk

[Jonathancilia]

They sit flat on the spacer and when i jack the car up and release the handbrake and i spin the rear wheels they got a slight wobble, i really cant tell if its the tires that are out of round or the wheels

Sent from my VFD 510 using Tapatalk

[Jonathancilia]

When i spin the wheel and i look at the inner part of the rim, its not completely round it has small areas abit out of round, and the tyre when i look at the thread part its wobbling from side to side not alot but its noticeable

Sent from my VFD 510 using Tapatalk

[Jonathancilia]

I see like this one when i spin the wheel

https://youtu.be/X-8mf5tWZ2s

Sent from my VFD 510 using Tapatalk

[AdamL200]

Wheels are knackered

[marrick]

I would definitely get a tyre fitter to put them on his wheel balancer to take a look. He will know straight away if they can be balanced or if they are buckled

Sent from my Pixel 2 using Tapatalk

[Jonathancilia]

Funnily enough i put the 14 inch wheel on again and this time i torqued it more than 80nm and its not pulsating much its better

Sent from my VFD 510 using Tapatalk

[Jonathancilia]

I only see a small dented area on the wheel its not as bad as the one in the video

Sent from my VFD 510 using Tapatalk

[marrick]

Very strange. Only thing that would do that is above, wheel isn't sitting flat on the spacer ) drum. I would definitely get it checked out by a competent tyre fitter / mechanic to balance then and see if the wheels are fitted correctly

Sent from my Pixel 2 using Tapatalk

[Jonathancilia]

I will trt and torque the other wheel more and see if its any better i will keep you posted

Sent from my VFD 510 using Tapatalk

[Jonathancilia]

Other thing i need to add is the back tyres are different brands and one is 165/65 and the ither 175/65 and they are made in china lol but they have almost new thread and they are 4 years old

Sent from my VFD 510 using Tapatalk

[marrick]

Just stick the originals back on haha! Would fail a UK MOT with different sizes on. Honestly get it looked at properly mate

Sent from my Pixel 2 using Tapatalk

[Jonathancilia]

No it isnt a fail here in malta, maybe for now iwill leave them and then sometime i will replace them with new quality tyres

Sent from my VFD 510 using Tapatalk

[Jonathancilia]

Im sorry i was mistaken, back tyres are both 165/65 and fronts are 175/65 both, fronts are same brand and rears both differemt brands

Sent from my VFD 510 using Tapatalk

[Jonathancilia]

So i tightened the wheel bolts more on both rear wheels and the pulsation is almost gone during high speeds, vibration in the seat is gone.

Only a slight pulsation at about 50km/h but i think the fact that the back brakes are crap they are affecting this also

Sent from my VFD 510 using Tapatalk

[Jonathancilia]

Hey today i was looking at the rear of the car and oddly enough i saw the rear right tyre leaning in. The rear left is straight. This means something bad in trailing arms?

Sent from my VFD 510 using Tapatalk

[Manu]

wheels and brakes are both shot, and you're trying to fix that using the turd glitter method. Nothing to advise but to replace the lot here. Ultimately that's a safety issue, but that's your call though I wouldn't want to be a passenger in your car.

If you carry on like that, suspension and axle are next.

[Jonathancilia]

Brakes are on their way to get replaced. However on another note i read on this forum that when a tire leans inward it is a problem with the trailing arm

Sent from my VFD 510 using Tapatalk

[MartinObviously]

Brakes are on their way to get replaced. However on another note i read on this forum that when a tire leans inward it is a problem with the trailing arm

Sent from my VFD 510 using Tapatalk

Yes negative camber can be a sign of axle wear.

Normally there will be play in the axle when you jack the rear of the car, then eventually the wheel touches the inner wheel arch.

[Jonathancilia]

I dont know if theres play when you jack up havent checked yet

Sent from my VFD 510 using Tapatalk

[Jonathancilia]

What is the part number for the rear brake shoes for saxo no ABS?

Sent from my VFD 510 using Tapatalk

[Jonathancilia]

My friend told me tgat brake shoes from a peugeot 306 no abs will fit on mine as they are 180mm drums aswell is this true ?

Sent from my VFD 510 using Tapatalk

[lwigmore]

I've been away from this site for about 5 years now, I come back on just to see if everything/one is still alive and still got idiots who cause more harm than good to there car. It would be easier just get rid of the shit alloys, put originals back on, change the brakes all round and go from there.

Have you heard of the phrase, "if it ain't broke, don't fix it", let us know how progress gets on as well.

[Jonathancilia]

Im changing brakes all the way round yeah i know that and anyways you difnt answer my question i already knew what you told me...

Sent from my VFD 510 using Tapatalk

[lwigmore]

My friend told me tgat brake shoes from a peugeot 306 no abs will fit on mine as they are 180mm drums aswell is this true ?

Sent from my VFD 510 using Tapatalk

No idea but just buy some brake shoes for a saxo to be safe? It seems like you need to go to your local motor factor or look online for the brake shoes.

They shouldn't be too much money mate.

[Jonathancilia]

Done deal found a good set online they are on their way

Sent from my VFD 510 using Tapatalk

[Jonathancilia]

Just wanted to keep you updated, i just installed peugeot 206 gti discs, pads and calipers on saxo, had to grind off a little bit from the caliper carrier to fit and some new bolts etc... But very happy with the result, i refurbished the calipers with new seals and a lick of paint very happy with the result, now we wait for the brake drums and shoes to arrive :)https://uploads.tapatalk-cdn.com/20180510/9758878bc544de42d9b9181db9bef1d5.jpghttps://uploads.tapatalk-cdn.com/20180510/3e813196ff93becbc601ef959b262cc8.jpghttps://uploads.tapatalk-cdn.com/20180510/c359a1289b3d44216c61ac210866f7bf.jpg

Sent from my VFD 510 using Tapatalk

[Jonathancilia]

Its in the crap spacers i got they are not hubcentric and they will wobble slightly under acceleration

Sent from my VFD 510 using Tapatalk