Camber Shims & Toe

SharpyClio · May 15, 2024

I am looking to add camber shims to the 182, I was speaking with my mechanic friend and he said that depending on the way the axle sits on the wheel adding camber shims might change the Toe and then you need to get more shims to correct the Toe.

So, my question is simple, does adding camber shims to the back change the Toe as well or does it remain largely the same?

Mr Underhill · May 15, 2024

SharpyClio said:
does adding camber shims to the back change the Toe as well or does it remain largely the same?

Yes.

SharpyClio · May 15, 2024

Mr Underhill said:
Yes.

Its changes it or it remains the same lol. 🤪

RSRowe · May 15, 2024

It changes it.
The X85 has a table of geo changes - I expect the Mk2's would change a similar amount https://www.manualslib.com/manual/807837/Renault-Clio-Cup.html?page=25#manual

SharpyClio · May 15, 2024

RSRowe said:
It changes it.
The X85 has a table of geo changes - I expect the Mk2's would change a similar amount https://www.manualslib.com/manual/807837/Renault-Clio-Cup.html?page=25#manual

So if I wanted to add 2degs of rear camber I would need to do what with Tow shims? I am a bit lost on all of this tbh.

RSRowe · May 15, 2024

It's very likely you'll have an amount of camber in the beam stock. Really you need to get it measured first before you start ordering shims.

If you take the 1° column on that chart, it's saying that by fitting a 1° camber shim, you would get 0.16° of positive toe (toe in), which the beam will also likely have built into it as standard anyhow. When I put camber shims in my Mk3, I ended up with around 1° of toe in on the rear, which made it handle like a complete bag of s**t.
I then fitted toe shims to correct that and got it remeasured again.

Unfortunately it isn't a simple task of just fitting what you think is right and then it measuring ok. It's entirely possible that you'll end up having to get it measured twice in order to get the end result that you want.

SharpyClio · May 15, 2024

RSRowe said:
It's very likely you'll have an amount of camber in the beam stock. Really you need to get it measured first before you start ordering shims.

If you take the 1° column on that chart, it's saying that by fitting a 1° camber shim, you would get 0.16° of positive toe (toe in), which the beam will also likely have built into it as standard anyhow. When I put camber shims in my Mk3, I ended up with around 1° of toe in on the rear, which made it handle like a complete bag of s**t.
I then fitted toe shims to correct that and got it remeasured again.

Unfortunately it isn't a simple task of just fitting what you think is right and then it measuring ok. It's entirely possible that you'll end up having to get it measured twice in order to get the end result that you want.

Thanks - The mechanic has all the measurements from its current state, I know he said that the amount of camber on it was pathetic really.

I just wanted to get my head around the tables which you have explained now which is really helpful. Thank you.

I did figure it would take multiple efforts to get it right, might see if I can do the changes at his garage rather than bringing it home each time.

Mr Underhill · May 15, 2024

SharpyClio said:
Its changes it or it remains the same lol. 🤪

Sorry, I was rushing out the door. To be fair it was a two-part question so the real answer is yes and probably. 🤣

I'll message you with some real-world examples illustrating the benefits and drawbacks of doing it.

JamesBryan · May 15, 2024

Your 182 should have about -1.5 of camber as it stands currently i'd imagine.

Another degree should do it.

SharpyClio · May 15, 2024

JamesBryan said:
Your 182 should have about -1.5 of camber as it stands currently i'd imagine.

Another degree should do it.

That number rings a bell tbf.

JamesBryan · May 15, 2024

SharpyClio said:
That number rings a bell tbf.

Yeah it's around factory spec, they're anywhere from -1 to -1.5 and 20'-30' toe in per side.

Dial it in to -2.5 and 10' toe in per side and it'll be sound.

Don't really want parallel toe on the rear unless you like it tail happy.

Beauvais Motorsport · May 15, 2024

How does it change the toe? Or is that 'effective' toe change from camber thrust?

the_baron_von_richthofen · May 15, 2024

I was wondering how it changed toe on the rear also.

I can understand it on the front when you have the camber change fighting against the track rods etc but my (very) small brain cant work it out for the rear!

SharpyClio · May 15, 2024

So from I understand if the axle isn’t exactly at right angles with the ground then a camber shim will also adjust the tow as it’s not all in line. Sure someone will come along and explain better but it’s all to do with the angles of the axle in relation to the floor

Beauvais Motorsport · May 15, 2024

SharpyClio said:
So from I understand if the axle isn’t exactly at right angles with the ground then a camber shim will also adjust the tow as it’s not all in line. Sure someone will come along and explain better but it’s all to do with the angles of the axle in relation to the floor

You're right. You could work out exactly how much it will change if you had dimensions of the beam.

Mr Underhill · May 15, 2024

That’s how it was described to me.

The rear axle isn't perpendicular to the ground. Any adjust to the camber, tilts the wheels and affects their alignment with the centerline of the vehicle, which includes the toe angle. Different suspension and wear and tear can affect it as well.

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Camber Shims & Toe

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