Brakes overheated going downhill

[Toyota-fan]

13 hours ago, TonyHSD said:

Even the cheapest aftermarket brake parts from well known brands will do as good as Toyota oem or even better as long as they are fitted correctly and all components work as they should.

Cheap aftermarket brake pads are known to cause problems. Uneven and premature wear, squeaky brakes and whatnot. That's from personal experience in professional settings.  I have direct personal experience in that department. I can't say the same thing about the discs because I've been avoiding the cheaper aftermarket discs and have been opting to machine or go for good brands. The real reason is that there ain't any "cheaper" aftermarket discs where I am. We use micrometres to measure their evenness and some of them do not look good(wobbly) when fitted to the brake lathe machine. BTW, even the brand new discs I installed, I lightly machine them before fitting them, just be sure. It is never that simple. 

[Seb_90]

Out of interest, I've tried to find any places near me who would do the the process of skimming of the brake disks. I found only two in the county..

I've checked the prices and the cheapest I can see it it would cost £50+vat per disc to get it skimmed! 

Just for reference, I'm about to order 2x Brembo front discs for my partners SUV for £96 from Autodoc. 

I don't think this process is too economical in the UK (and I assume western EU). 

[TonyHSD]

1 hour ago, Seb_90 said:

Out of interest, I've tried to find any places near me who would do the the process of skimming of the brake disks. I found only two in the county..

I've checked the prices and the cheapest I can see it it would cost £50+vat per disc to get it skimmed! 

Just for reference, I'm about to order 2x BREMBO front discs for my partners SUV for £96 from Autodoc. 

I don't think this process is too economical in the UK (and I assume western EU). 

You can check your parts numbers here https://japancars.ru/index.php?route=catalog/toyota , then use the original numbers and search eBay and Amazon. Most car parts traders use these platforms to offer parts online in uk.  
I personally use Blueprint or Febi , these are high quality aftermarket parts and their brake discs are one of the cheapest but also very good one. 
For brake pads I use EBC Ultimax, these are as good as pagid, Bosch or textar, they smell the same too. Another cheap and good brand brake components are APEC English company again and ok quality. 
There are others like Mintex, Jurid, and Eurocarparts own cheap brands. 
Most brake parts from well known brands will do exactly the same job and cause you no problems. Majority of the problems comes from poor fitting.

 

And here fitted to the car. 

[Toyota-fan]

7 hours ago, Seb_90 said:

Out of interest, I've tried to find any places near me who would do the the process of skimming of the brake disks. I found only two in the county..

I've checked the prices and the cheapest I can see it it would cost £50+vat per disc to get it skimmed! 

Just for reference, I'm about to order 2x BREMBO front discs for my partners SUV for £96 from Autodoc. 

I don't think this process is too economical in the UK (and I assume western EU). 

I would have to agree with you on that.  Replacing brake discs appear to be the most economical approach in UK. Obviously, some of my advice does not apply to car owners in UK because it appears the machining of discs are more expensive than replacing the discs in UK. 

[Toyota-fan]

6 hours ago, TonyHSD said:

You can check your parts numbers here https://japancars.ru/index.php?route=catalog/toyota , then use the original numbers and search eBay and Amazon. Most car parts traders use these platforms to offer parts online in uk.  
I personally use Blueprint or Febi , these are high quality aftermarket parts and their brake discs are one of the cheapest but also very good one. 
For brake pads I use EBC Ultimax, these are as good as pagid, Bosch or textar, they smell the same too. Another cheap and good brand brake components are APEC English company again and ok quality. 
There are others like Mintex, Jurid, and Eurocarparts own cheap brands. 
Most brake parts from well known brands will do exactly the same job and cause you no problems. Majority of the problems comes from poor fitting.

 

And here fitted to the car. 

Yes, that is good information.

FYI, there are lot of aftermarket parts that come from China. Some of them good, some aren't and brake pads and discs are not excluded in that scenario. Yes, it helps to go for the known reputable brands. Pretty much everything is made in China these days. Filtering good parts from below par ones isn't always that easy. 

[Toyota-fan]

23 hours ago, TonyHSD said:

Majority of brake problems comes from improper fitting, and use of grease in places that should not be used.  
 

What are the places people incorrectly use grease on when replacing brake pads and discs? 

Is that just using grease or using the wrong type of grease?

I'm assuming we are not talking about rebuilding callipers as it is a job for any DIYer who understands the brake system and follows the repair manual procedures properly. Even the replacement of callipers need proper care in order to not damage the brake system.

[TonyHSD]

16 hours ago, Toyota-fan said:

What are the places people incorrectly use grease on when replacing brake pads and discs? 

Is that just using grease or using the wrong type of grease?

I'm assuming we are not talking about rebuilding callipers as it is a job for any DIYer who understands the brake system and follows the repair manual procedures properly. Even the replacement of callipers need proper care in order to not damage the brake system.

No rebuilding callipers.
This is also an easy job , basically  on Toyota cars most tasks are easy as long as you have the tools and place to do the work and some information how to . 
For the grease use each make and model are so slightly different but any brake replacement components should be done exactly as in the factory and no grease or any other lubricant should be used anywhere except a silicone grease on the slider pins on most Toyota models. And the pins when lubed should be done with small amount of grease because putting more than necessary and especially face of the slider can poke it out and cause dragging and overheating, damage the new brake parts. 
The places the never should be used grease are all mounting points - Hub - Discs - Wheels. And no grease on back of pads or callipers. Everything should be dry , bare clean metal rust free , and sliders only with silicone grease. Torque to specs hub nuts 104Nm most Toyota cars. 

 

[Toyota-fan]

2 hours ago, TonyHSD said:

No rebuilding callipers.
This is also an easy job , basically  on Toyota cars most tasks are easy as long as you have the tools and place to do the work and some information how to . 
For the grease use each make and model are so slightly different but any brake replacement components should be done exactly as in the factory and no grease or any other lubricant should be used anywhere except a silicone grease on the slider pins on most Toyota models. And the pins when lubed should be done with small amount of grease because putting more than necessary and especially face of the slider can poke it out and cause dragging and overheating, damage the new brake parts. 
The places the never should be used grease are all mounting points - Hub - Discs - Wheels. And no grease on back of pads or callipers. Everything should be dry , bare clean metal rust free , and sliders only with silicone grease. Torque to specs hub nuts 104Nm most Toyota cars. 

 

That is all good and correct. I am at lost why would anybody use grease of any type on discs and pads unless something not right in their head and most certainly such person should not touch anything related to brakes and perhaps anything in a car. Anti-seize grease is also unnecessary on mounting bolts of callipers because they don't get tighten like truck wheel nuts or subjected to constant high heat like exhaust related bolts. .

Come to think of it, I'm beginning to think twice before posting half advice on servicing brakes, if it is true that some DIY people use grease on brake parts that they should not. It has not come to my attention some DIYers do such things until you mentioned it here. I take brake servicing as a critical area of servicing in a car, be it DIY or professional.