Scion IQ Forums banner

Rear disc brakes on american scion iq

15870 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?
61 - 71 of 71 Posts
Apparently there's a science to lifting the tiny car with such weight bearing work to be done. You will be shifting a good amount of center of mass when you remove the axle, so have to choose the appropriate support points. I have yet to figure out where in the driveway to set up. I'm really spoiled with regards to driveway space but I've taken up a lot of it over the years. I have a spot in mind where it won't block much but I'm a little worried I might be cramped there.
Good point. Since you know the weight of the new axle (it's probably stamped on the box) - can't you add about the same weight into the trunk? A few bags of sand or weights or one mother in law should do fine. People sell weights for cheap on craiglist all the time.

Putting a jack under the cross-member probably would not hurt either.
  • Like
Reactions: 1
Thanks!

I was thinking of leaving the front wheels on ramps but I think I didn't use them on oil changes because the front mudguard would scrape on the way up. I wouldn't be able to rotate tires but save me a little worry. (I don't have the weight of the axle readily available). There appear to be more forward points available than the pinch weld spots on the side, I may use those and take a pic. Not sure what Toyota was thinking with the rear pinch weld spots. Deceptively looks like the shorter of the two would be correct but seems it is opposite. Will snap a pic of that as well...

Sent from my moto g(7) power using Tapatalk
Thanks!

I was thinking of leaving the front wheels on ramps but I think I didn't use them on oil changes because the front mudguard would scrape on the way up. I wouldn't be able to rotate tires but save me a little worry. (I don't have the weight of the axle readily available). There appear to be more forward points available than the pinch weld spots on the side, I may use those and take a pic. Not sure what Toyota was thinking with the rear pinch weld spots. Deceptively looks like the shorter of the two would be correct but seems it is opposite. Will snap a pic of that as well...

Sent from my moto g(7) power using Tapatalk

You can lift the car with the jack and slip in the ramps under the wheels (there are RaceRamps with a smaller approach angle, but they are pretty expensive). The front lifting point is a bump on the cross member - user manual has a picture. There are two more points on the control arms - dig up installation manual for the TRD rear sway bar, it has a diagram with all 8 lifting points and a center of gravity.

Another option to maintain the balance is to put a jack under the oil pan.
  • Like
Reactions: 1
@jzchen:

Any updates on how this went in the last couple of months? I'm interested in potentially doing this myself. I hate having drums in the rear and servicing them, would rather have four wheel disc.
Haven't gotten a chance to work on it. I am sorry about the delay.

Will update as soon as I get the chance to start. As a heads up/warning it was a challenge to source the dust shields. (I mention where I finally found them somewhere here on this forum, (I believe a Russian or Ukrainian company that had stock, but I think they were discontinued from Toyota/Scion). If you care about that try to source those first...

Sent from my moto g(7) power using Tapatalk
Thanks for the update @jzchen. I'm going to keep an eye on your progress and see how it goes before I go deep. I'm already in a few grand on just replacing things on the car for maintenance reasons, so I figure I'll wait a bit before going in on this. But I like your plan and I think based on my reading that this should theoretically work.
Okay. This is depressing this is 3 years old in the making. Regarding the Duracell charger I went to my iQ one day and my 46B24R AGM with JIS to SAE adapters was dead. I have switched to a waterproof magnetic 3 or 4 A unit from Walmart....
Okay. This is depressing this is 3 years old in the making. Regarding the Duracell charger I went to my iQ one day and my 46B24R AGM with JIS to SAE adapters was dead. I have switched to a waterproof magnetic 3 or 4 A unit from Walmart....
Meh, 3 covid years equal one normal. Took me a year to change the clutch on my Audi. And I ended up messing it up, having to pay a mechanic cause I could not bring myself to do it for the 3rd time. My IQ battery started dying after installing the interior light kit and my mirror / dashcam mod. I was going to look into it (almost sure it’s the light kit) but figured screw it and just installed a battery disconnect:) I think I'm still on the original battery.
  • Like
Reactions: 2
Well, towards the beginning of April we got an EQB lease, so with a third car and my wife, son, and I driving while my parents stopped driving their car I have the chance to finally start this! Gonna have the front tires on Rhino Ramps: any advice on how to support the rear without warping the sideskirts?
  • Like
Reactions: 1
I think normal jack stands should work fine with IQ on the pinch weld points. To put it on the stands, the rear end can be lifted by the rear axle (or somesuch - it should be in the shop manual).
I think normal jack stands should work fine with IQ on the pinch weld points. To put it on the stands, the rear end can be lifted by the rear axle (or somesuch - it should be in the shop manual).
The manual notes a specific segment of the pinch weld as you note, but the center part in that area (if I remember it correctly) is a lot lower/longer than a normal pinch weld…

Hmmm…. Time to do some Googling…
61 - 71 of 71 Posts
Top