sci.electronics.design | Brake pad size| page 3

Reply by Eddy Lee ●October 24, 20232023-10-24

On Tuesday, October 24, 2023 at 1:24:39&#8239;AM UTC-7, Martin Brown wrote:
> On 23/10/2023 15:56, Eddy Lee wrote: 
> > I got new 2014 pads that won't fit in my 2012 Nissan Leaf. Did they change size in 2014? What is the typical brake pad size?
> Why on earth didn't you get the right part? 
> Do US cars not have the equivalent of Haynes manuals? 
> 
> https://haynes.com/en-gb/
> > 2012: 6.5" total length 
> > 2014: 5.5" total length 
> > 
> > Should I change to the newer brake bracket?
> Probably a very bad idea. There may be a good reason why the old pads 
> are 16% bigger to obtain the regulation stopping distance. 

Apparently, they have some 2014 to 2017 cars with smaller pads.  There are plenty of pads with this year spec or no year spec at all.  Sellers don't response to questions either.  There is no specific reports or 2014/17 Leaves with brake failures.  I think it can go with even smaller brake and rotor.

> Isn't your car held together with duct tape and sealing wax already? 

That's my plan B.  The re-gen motor is doing most of the work.  Perhaps I can super-glue some ceramic to the old pad.

Reply by Dan Purgert ●October 24, 20232023-10-24

On 2023-10-24, Martin Brown wrote:
> On 24/10/2023 14:58, Eddy Lee wrote:
>> On Tuesday, October 24, 2023 at 2:30:01&#8239;AM UTC-7, Dan Purgert wrote:
>>> On 2023-10-24, Martin Brown wrote:
>>>> On 23/10/2023 15:56, Eddy Lee wrote:
>>>>> I got new 2014 pads that won't fit in my 2012 Nissan Leaf. Did they
>>>>> change size in 2014? What is the typical brake pad size?
>>>>
>>>> Why on earth didn't you get the right part?
>>>> Do US cars not have the equivalent of Haynes manuals?
>>>>
>>>> https://haynes.com/en/
>>> We do. Or at least the good auto-parts stores have an equivalent.
>>> Worst case, it means asking the dude at the counter for the part(s) you
>>> need.
>> 
>> Doesn't work that way online.  I asked two sellers about the size.
>> No response so far.  It's for the right model, but wrong year.
>
> It does in the UK you put your car details in and it offers compatible 
> with make and model brake pads or whatever other spare part you want. 

Same here (USA) -- just went to the Autozone website.  Searched for
"brake shoe", then the next page came up with a pretty prominent set of
filters for 

  -- Year
  -- Make
  -- Model
  -- Engine 

I assume the "Engine" filter is less about the brake shoes specifically,
and more about other parts they sell for your car.

>
>> Just curious what other cars use.  Do people not know their shoe size
>> or pad size?
>
> Not unless the unit is dismantled and in front of me.

I wouldn't even know unless I was looking at the box :).  I mean I could
definitely ballpark it to a few tens of millimeters, but that's also
enough slop to be problematic :)

> [...]
> The exact part number was generally more useful than its dimensions!!!
>

Quite so.


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Reply by Eddy Lee ●October 24, 20232023-10-24

On Tuesday, October 24, 2023 at 9:05:04&#8239;AM UTC-7, Dan Purgert wrote:
> On 2023-10-24, Martin Brown wrote: 
> > On 24/10/2023 14:58, Eddy Lee wrote: 
> >> On Tuesday, October 24, 2023 at 2:30:01&#8239;AM UTC-7, Dan Purgert wrote: 
> >>> On 2023-10-24, Martin Brown wrote: 
> >>>> On 23/10/2023 15:56, Eddy Lee wrote: 
> >>>>> I got new 2014 pads that won't fit in my 2012 Nissan Leaf. Did they 
> >>>>> change size in 2014? What is the typical brake pad size? 
> >>>> 
> >>>> Why on earth didn't you get the right part? 
> >>>> Do US cars not have the equivalent of Haynes manuals? 
> >>>> 
> >>>> https://haynes.com/en/ 
> >>> We do. Or at least the good auto-parts stores have an equivalent. 
> >>> Worst case, it means asking the dude at the counter for the part(s) you 
> >>> need. 
> >> 
> >> Doesn't work that way online. I asked two sellers about the size. 
> >> No response so far. It's for the right model, but wrong year. 
> > 
> > It does in the UK you put your car details in and it offers compatible 
> > with make and model brake pads or whatever other spare part you want.
> Same here (USA) -- just went to the Autozone website. Searched for 
> "brake shoe", then the next page came up with a pretty prominent set of 
> filters for 
> 
> -- Year 
> -- Make 
> -- Model 
> -- Engine 

This is what they have for $275.  But I don't need rotors.  They don't tell me the pad size either.

https://www.autozone.com/brake-system/perf-brake-pad-rotor-drum-shoe-kit/p/powerstop-performance-brake-pads-rotors-kit-koe8272/1033351_0_0?searchText=brake+pad

Reply by Ricky ●October 24, 20232023-10-24

On Tuesday, October 24, 2023 at 11:37:30&#8239;AM UTC-4, Eddy Lee wrote:
> On Tuesday, October 24, 2023 at 8:33:51&#8239;AM UTC-7, Ricky wrote: 
> > On Tuesday, October 24, 2023 at 11:28:52&#8239;AM UTC-4, Eddy Lee wrote: 
> > > On Tuesday, October 24, 2023 at 7:10:40&#8239;AM UTC-7, Ricky wrote: 
> > > > On Tuesday, October 24, 2023 at 9:58:17&#8239;AM UTC-4, Eddy Lee wrote: 
> > > > > On Tuesday, October 24, 2023 at 2:30:01&#8239;AM UTC-7, Dan Purgert wrote: 
> > > > > > On 2023-10-24, Martin Brown wrote: 
> > > > > > > On 23/10/2023 15:56, Eddy Lee wrote: 
> > > > > > >> I got new 2014 pads that won't fit in my 2012 Nissan Leaf. Did they 
> > > > > > >> change size in 2014? What is the typical brake pad size? 
> > > > > > > 
> > > > > > > Why on earth didn't you get the right part? 
> > > > > > > Do US cars not have the equivalent of Haynes manuals? 
> > > > > > > 
> > > > > > > https://haynes.com/en/ 
> > > > > > We do. Or at least the good auto-parts stores have an equivalent. 
> > > > > > Worst case, it means asking the dude at the counter for the part(s) you 
> > > > > > need. 
> > > > > Doesn't work that way online. I asked two sellers about the size. No response so far. It's for the right model, but wrong year. 
> > > > > 
> > > > > Just curious what other cars use. Do people not know their shoe size or pad size? 
> > > > No, most of us buy the part that's for our car model and year. But... sometimes that's not enough. I had a 1997 T100 and had a shop replace the water pump. I asked for a quote before they tore it apart. I couldn't get them to respond to phone calls, so after a couple of days I drove over and the front of the engine was apart. I was pissed off thinking the guy was going to jack me around on the price. The guy kept trying to say he couldn't identify the right part without taking it out, which I didn't believe. 
> > > > 
> > > > Later, the alternator diodes went bad and I could not identify the right part. I don't recall the details, but I ended up buying a used alternator. Seems Toyota did a revamp of many parts of the car in the middle of the model year. The water pump and alternator were both changed at that point. 
> > > > 
> > > > So, there are times when you need the serial number, or even the old part to identify the replacement part. 
> > > There is no serial number for simple part like brake pad. Haven't done repair like this for a long time, but hate being rip-off. I took my car to the shop and ask him to replace my bent control-arm. He wants $200 to diagnose the problem. I said what diagnose, you can just look at it. 
> > Sometimes you can be seriously dense. I'm talking about the serial number of the CAR!!! The automaker tracks all changes to the parts list by serial number. This info is how the parts catalogs are arranged. Did you not read anything that I wrote about this?
> You mean VIN? I got confused by SN. OK, show me a link to check.

To check what?  If you want the right part, you give the VIN to the guy at the parts counter.  Yeah, it's that simple.  I every Internet parts supplier I've dealt with also lets you enter the VIN. 

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  Rick C.

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Reply by Martin Brown ●October 24, 20232023-10-24

On 24/10/2023 17:00, Eddy Lee wrote:
> On Tuesday, October 24, 2023 at 1:24:39&#8239;AM UTC-7, Martin Brown wrote:
>> O
>> Isn't your car held together with duct tape and sealing wax already?
> 
> That's my plan B.  The re-gen motor is doing most of the work.  Perhaps I can super-glue some ceramic to the old pad.

I wish I thought you were joking...

-- 
Martin Brown