Yes it matters, you have to correct diameter for the correct pads otherwise you jeopardise braking performance, as the surface area of contact with the pad and disc has to be exact. Having an incorrect diameter will cause uneven wear, it will also be noisy because of the contact.
You must have a piston rewind tool with the correct fitment otherwise you can damage the rubber seal which can cause an ingress of dirt into the calliper.
@chiragbulsara thanks for the reply, turns out the piston is seized on both read calipers, do you know what I'd need to look for to upgrade to brembos, I have standard pads but the disc is damaged and then caliper needs to be replaced so I might aswell go to brembos now as I planned to anyway at some point. Thanks
@@cianbarriscale751 just to double check your callipers aren’t seized. Loosen the bleed nipple and then try to rewind the calliper, ensure the brake reservoir lid is open also. If both your callipers are seized you’ll have to order replacements preferably from eurocarparts or gsf. Can also try autodoc. Like wise you can get the disc from these sites also. I’d recommend changing pads also to compliment the new disc. You’ll need brake fluid, a pneumatic bleeder. Some decent tools to release the handbrake cable and reattach it. Best of luck
@chiragbulsara thanks but I think I'm gonna bring her to a mechanic, I'll give everything a go myself but not sure how much I want to mess around with the brakes, not something I want to make a mistake with and doing the calipers is a much bigger job then just the pads. Thanks very much tho.
Hello Alex, I believe you’re referring to the disc. On some instances it’s worth jacking up your car and removing the tire. Not always but sometimes on the hub of the disc it will have the sizes engraved. Or alternatively you could measure it. Sites such as eurocarparts aren’t always accurate as they will hold different size discs and pads due to different engine variants and models of the same car. Generally speaking the larger the displacement of your vehicle the bigger the pads and disc. Also if you know your engine code for the vehicle you can verify the size that way. Hope this finds you well
Hello Alex, I believe you’re referring to the disc. On some instances it’s worth jacking up your car and removing the tire. Not always but sometimes on the hub of the disc it will have the sizes engraved. Or alternatively you could measure it. Sites such as eurocarparts aren’t always accurate as they will hold different size discs and pads due to different engine variants and models of the same car. Generally speaking the larger the displacement of your vehicle the bigger the pads and disc. Also if you know your engine code for the vehicle you can verify the size that way. Hope this finds you well
Hello Alex, I believe you’re referring to the disc. On some instances it’s worth jacking up your car and removing the tire. Not always but sometimes on the hub of the disc it will have the sizes engraved. Or alternatively you could measure it. Sites such as eurocarparts aren’t always accurate as they will hold different size discs and pads due to different engine variants and models of the same car. Generally speaking the larger the displacement of your vehicle the bigger the pads and disc. Also if you know your engine code for the vehicle you can verify the size that way. Hope this finds you well
No. this was simply just a brake pad and disc replacement. You will only have to bleed the brakes if the brake reservoir was opened or the brakes aren’t performing optimally.
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Thanks for this video just when I needed it !! 😅
Thanks for your comment. How did it go?
The torx you removed was 10 Times better then the new + bolt.
Agreed
Dose the diameter matter for the disks ? Big thanks
Yes it matters, you have to correct diameter for the correct pads otherwise you jeopardise braking performance, as the surface area of contact with the pad and disc has to be exact. Having an incorrect diameter will cause uneven wear, it will also be noisy because of the contact.
I need to chmage my pads do i need to go buy a piston rewind tool before i do it or is that just to make it easier
You must have a piston rewind tool with the correct fitment otherwise you can damage the rubber seal which can cause an ingress of dirt into the calliper.
@chiragbulsara thanks for the reply, turns out the piston is seized on both read calipers, do you know what I'd need to look for to upgrade to brembos, I have standard pads but the disc is damaged and then caliper needs to be replaced so I might aswell go to brembos now as I planned to anyway at some point. Thanks
@@cianbarriscale751 just to double check your callipers aren’t seized. Loosen the bleed nipple and then try to rewind the calliper, ensure the brake reservoir lid is open also.
If both your callipers are seized you’ll have to order replacements preferably from eurocarparts or gsf. Can also try autodoc. Like wise you can get the disc from these sites also. I’d recommend changing pads also to compliment the new disc.
You’ll need brake fluid, a pneumatic bleeder. Some decent tools to release the handbrake cable and reattach it. Best of luck
@chiragbulsara thanks but I think I'm gonna bring her to a mechanic, I'll give everything a go myself but not sure how much I want to mess around with the brakes, not something I want to make a mistake with and doing the calipers is a much bigger job then just the pads. Thanks very much tho.
Where did you find the correct size rears? I heard that they are 255-256 but have to be 51mm in height? That’s for 2.0 170 2012 that is
Hello Alex, I believe you’re referring to the disc. On some instances it’s worth jacking up your car and removing the tire. Not always but sometimes on the hub of the disc it will have the sizes engraved. Or alternatively you could measure it.
Sites such as eurocarparts aren’t always accurate as they will hold different size discs and pads due to different engine variants and models of the same car. Generally speaking the larger the displacement of your vehicle the bigger the pads and disc.
Also if you know your engine code for the vehicle you can verify the size that way.
Hope this finds you well
Hello Alex, I believe you’re referring to the disc. On some instances it’s worth jacking up your car and removing the tire. Not always but sometimes on the hub of the disc it will have the sizes engraved. Or alternatively you could measure it.
Sites such as eurocarparts aren’t always accurate as they will hold different size discs and pads due to different engine variants and models of the same car. Generally speaking the larger the displacement of your vehicle the bigger the pads and disc.
Also if you know your engine code for the vehicle you can verify the size that way.
Hope this finds you well
Hello Alex, I believe you’re referring to the disc. On some instances it’s worth jacking up your car and removing the tire. Not always but sometimes on the hub of the disc it will have the sizes engraved. Or alternatively you could measure it.
Sites such as eurocarparts aren’t always accurate as they will hold different size discs and pads due to different engine variants and models of the same car. Generally speaking the larger the displacement of your vehicle the bigger the pads and disc.
Also if you know your engine code for the vehicle you can verify the size that way.
Hope this finds you well
Did you bleed the brakes after ?
No. this was simply just a brake pad and disc replacement. You will only have to bleed the brakes if the brake reservoir was opened or the brakes aren’t performing optimally.