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Rear disc brakes on american scion iq

15868 Views 70 Replies 8 Participants Last post by  jzchen
discuss.

i want this bad.

and a six speed but thats besides the point.

what would it take to get the rear discs available in europe fitted here in the USA? would you need a whole different rear axle for the mounting and routing of the brakes?
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I came across a problem. I have instructions available that details removal and replacement of the axle with drum brakes. I do not have anything like that for the new axle with disc brakes! I checked Canada’s iQ Owner’s Manual and seems like they got rear drum brakes also? Maybe need to subscribe on the EU site to find this info.....
Looking at the drum version instructions I see one needs additional one time use parts:

Two or four clips, not 100% certain on this part number: 90468-08035
Exhaust gasket: 17451-23042
Axle Bush(ing) (Qty 2): 48725-74011

The axle bushings are $75.77 each MSRP, and the kicker is they are only $22.06 each on Amayama. (Feeling depressed I didn't order them with the original order, I've come to a halt). I just checked and on Amayama the exhaust gasket is $7.54 while MSRP here is $24.28. Sigh.......

Still cheaper including the large shipping charge to get them direct from Japan.....
I still don’t have some parts, so I’m stuck:

Rotors, pads, calipers, rear axle bushings, as I’m aware on the top of my head. I’ll be back as soon as I have an update....
Just wanted to update that I purchased the proper rear brake pads from my research. I had a $20 rewards credit expiring at AutoZone, a Merchandise Credit, and a Gift Card, so I bought a set of Duralast Gold DG1354. I find these are the brake pads listed for a 2014 (and other similar model years) Toyota Yaris SE. So now when I have a little more budget again I will look at getting the calipers, rotors, rear axle bushings, and some replacement clips. The axle bushings and clips are one time use, so I can't take them off the current/old one....

(Sorry it's taking so long)!
curious if you had a chance to inspect the rear brake shoes to see how much is left? I heard that brake shoes (drum) last longer than disc.

Just wanted to update that I purchased the proper rear brake pads from my research. I had a $20 rewards credit expiring at AutoZone, a Merchandise Credit, and a Gift Card, so I bought a set of Duralast Gold DG1354. I find these are the brake pads listed for a 2014 (and other similar model years) Toyota Yaris SE. So now when I have a little more budget again I will look at getting the calipers, rotors, rear axle bushings, and some replacement clips. The axle bushings and clips are one time use, so I can't take them off the current/old one....

(Sorry it's taking so long)!
I’m almost 100% certain they are still good at just under 15k mi on the car. More motivated in heart of sharing than necessity. But I may wait...

Thanks for pointing this out!
I am sure they are still good. I have similar mileage on mine and am curious how much they've worn. Too lazy to pull the drums. :D

I’m almost 100% certain they are still good at just under 15k mi on the car. More motivated in heart of sharing than necessity. But I may wait...

Thanks for pointing this out!
I think it’s a great time to pull them, before they get worn and stuck! Maybe when I figure out how to get rid of the nasty spiders that have made webs, (without getting bit)!

I should take her for a drive more often. Sigh....
Have been searching for the forward rear axle bushings (that I regretfully didn’t order at the same time I ordered the disc specific rear axle).

I found quite a few cross reference part numbers here:

http://www.jikiu.com/catalogue/633115

I’m guessing the main concern of aftermarket part is reliability as compared to original Scion/Toyota part.

Then I found these Powerflex bushings, which cross with Citroen/Peugeot 5131.C9:

https://www.powerflex.co.uk/search.php?keywords=5131.C9

Anyone use these/have experience with their product? Thoughts?

Thanks!
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One more step closer as of yesterday. I saw www.pepboys.com had 2014 Toyota Yaris rear rotors for $8.99 each after 25% online discount and couldn’t resist the urge to buy them:

ProStop 44757G.

Powerflex U.K. confirmed the bushings are a proper fit. Trying to source from their US distributor before buying from a U.K. store....

Last expensive item will be the calipers.

June 1st I got into an at fault accident which totaled the car I drive around most of the time, so I will be driving the iQ more and not be able to disassemble it, but anyways not all the parts have been collected....
sorry to hear about your accident. hope all is ok.

One more step closer as of yesterday. I saw www.pepboys.com had 2014 Toyota Yaris rear rotors for $8.99 each after 25% online discount and couldn’t resist the urge to buy them:

ProStop 44757G.

Powerflex U.K. confirmed the bushings are a proper fit. Trying to source from their US distributor before buying from a U.K. store....

Last expensive item will be the calipers.

June 1st I got into an at fault accident which totaled the car I drive around most of the time, so I will be driving the iQ more and not be able to disassemble it, but anyways not all the parts have been collected....
sorry to hear about your accident. hope all is ok.
Thanks. I really hope my wife is okay as she sometimes complains of headaches now.

She just put a deposit on a replacement car this last Wednesday until we work out the financing...

I ended up purchasing a pair of Powerflex bushings as a UK site has free worldwide shipping, can sell without charging VAT (the EU tax,) and because I didn’t complete my purchase they emailed me a 10% off code). 52.11 GBP I wonder what Capital One will give me as exchange rate. PayPal was offering 0.7682918 GBP per USD.

Their design is significantly different than the original Toyota part, which will make it much easier to install. There’s some sort of proper clock positioning of the Toyota bushing that didn’t look straight forward to me in the instructions I have on how to replace the rear axle. Hopefully they fit!

Last big cost left will be the calipers...
I ordered bracketed calipers online from AutoZone because I got an email that I may receive a $25 rewards credit. (The 20% off code does not work). Reading the restrictions it said must be in stock, which they were. They were not listed as excluded. I just called customer relations and the lady said they didn't qualify.

I will soon have collected all the main pieces for the conversion!

Sent from my moto g(7) power using Tapatalk
Looking at the drum version instructions I see one needs additional one time use parts:

Two or four clips, not 100% certain on this part number: 90468-08035
Exhaust gasket: 17451-23042
Axle Bush(ing) (Qty 2): 48725-74011

The axle bushings are $75.77 each MSRP, and the kicker is they are only $22.06 each on Amayama. (Feeling depressed I didn't order them with the original order, I've come to a halt). I just checked and on Amayama the exhaust gasket is $7.54 while MSRP here is $24.28. Sigh.......

Still cheaper including the large shipping charge to get them direct from Japan.....
Might need 6 of those clips. They are cheap so I might order 10 to be safe. (They are one time use).

So I also missed two parking brake cables, one left and one right:

46430-74021
46420-74021

The instructions on the Toyota EU techstream site are not printer friendly. I am attempting to leave the windows open, but may just need to subscribe again when I actually start working on it...

Sent from my moto g(7) power using Tapatalk
So when I bought the brake calipers from AutoZone there was a core charge. Do you think I should try to go to a local pick-a-part and try to get them to return and get my core charge back?

Sent from my moto g(7) power using Tapatalk
that should work... they are going to rebuild/resell them anyway.

however, if they are not the exact calipers, buyer in the future will likely get the wrong calipers when they make it back to the stores.

So when I bought the brake calipers from AutoZone there was a core charge. Do you think I should try to go to a local pick-a-part and try to get them to return and get my core charge back?

Sent from my moto g(7) power using Tapatalk
that should work... they are going to rebuild/resell them anyway.

however, if they are not the exact calipers, buyer in the future will likely get the wrong calipers when they make it back to the stores.
I’ve been looking for Yaris of the same/similar year, but nearest is in Stanton or some city not so nearby.

How are you and your iQ? Did your tire cracking get worse like mine?
I'm ok. Hope all is well with you. Thanks.

I don't drive the IQ much and the tires are about the same. I'd probably replace them with 185 instead of the 175 when it's time.

I have to replace the battery (type 51- Interstate) and my wallet is $155 lighter. :mad:

I’ve been looking for Yaris of the same/similar year, but nearest is in Stanton or some city not so nearby.

How are you and your iQ? Did your tire cracking get worse like mine?
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