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Discussion Starter · #1 ·
Hi all,


The stock 111R has 5.5x16 front rims and 175/50-16 tyres.
However with the sportpack 111R has 6.5x16 front rims and 195/50-16 tyres.(the rear wheel set changes only the tyre but not the dimensions).

Can I put the 195 tyres on the front stock rims? SHould I be able to do it, the respective question for the rear set is self-answered :)


Any ideas?
 

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Discussion Starter · #4 ·
I've seen many people writing about the A048R tires and LSS tires.

1) Are these tires the same?
2) Is there any company on the internet where I can order them for my 111R and fit them on stock rims? (preferrably a european one...)
3) How much do they cost in the US? ( just to have an indication)
4) How long can I expect they'll last? (non-track use)

I'm considering this purchase, because many of our roads are slippery, and 111R understeers sometimes more than wanted.


BR,
Theo
 

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Discussion Starter · #6 ·
Arno said:

Going to A048R's is a very big and expensive step just to reduce some understeer.
The term "some understeer" is very relative to the road conditions we face in our countries...Some of our roads, have friction coefficient close to ice:)

So maybe as all safety measures, buying such tires would be expensive, but also a good preventive measure.

Thanks for your tips about adjusting the suspension. Should I also take case of it when I'd change the tires to A048Rs?


BR,
Theo
 

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Discussion Starter · #8 ·
Thanks a lot Conefusion! With Arno's feedback combined, your answer was very helpful, not only to me but hopefully for much more people reading this thread!
As one can conclude from your views, for the quality of roads I'm talking about, one should only try to tweak the front suspension a bit.

Could you Arno tell me with how much more negative front camber, and toe out could I initially start? Unfortunately, I don't have the manual with me right now to tell you the figures 111R has already.

BR,

Theo
 

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Discussion Starter · #10 ·
Arno said:
The 111R probably has the same settings as the older Elises.

So at the front it's currenty almost 0° for both the camber and the toe setting. (exactly straight up and straight ahead)

Going to -0.5° front camber and something like 0°10" total toe OUT should make it a lot more grippy at the front, but not cause too much tire wear.

On the S2 you can reach around -1° of front camber before you have to start modifying (shaving/cutting) the mounting plinth or the hub carrier face.

It's a good idea to have the car alignment checked after a few months anyway, as they do unfortunately *not* come from the factory with the proper settings most of the time, or the settings 'drift' after everything settles down during use.

Very common complaint on new Elises for instance is that the steering wheel is at an angle when going straight.. It tracks straight and there's no real alignment problem, but the steering wheel is not centered properly..

Very strange for a company who prides themselves on suspension and such, but it's a very common occurrance.

Bye, Arno.
What the manual says about 111R suspension parameters is the following:

Front suspension

[bi]Geometry specs - Standard Elise 111R[/bi]
Castor: Optimum: +3.8°
Tolerance range: +3.5° to +4.1°
max. side/side 0.35°

Camber: Optimum: -0.1°
Tolerance range: +0.1° to -0.3°
max. side/side 0.2°

Alignment: Optimum: Zero
Tolerance range: 0.5mm toe out to 0.7mm toe-in overall

[bi]Geometry specs - Roadsport Elise 111R, Exige:[/bi]
Castor: Optimum: +3.8°
Tolerance range: +3.5° to +4.1°
max. side/side 0.35°

Camber: Optimum: -0.3° (That's the 1st difference!)
Tolerance range: +0.1° to -0.5°
max. side/side 0.2°

Alignment: Optimum: Zero
Tolerance range: 0.5mm toe out to 0.5mm toe-in overall (2nd difference)


Rear suspension

[bi]Geometry specs - Standard Elise 111R[/bi]
Camber: Optimum: -1.8°
Tolerance range: -1.6° to -2.0°
max. side/side 0.2°

Alignment: Optimum: 1.2mm toe-in each side
Tolerance range: 1.2mm to 1.8mm toe-in each side
max. side/side 0.3mm

[bi]Geometry specs - Roadsport Elise 111R, Exige:[/bi]
Camber: Optimum: -1.8°
Tolerance range: -1.6° to -2.0°
max. side/side 0.2°

Alignment: Optimum: 1.5mm toe-in each side
Tolerance range: 1.2mm to 1.8mm toe-in each side
max. side/side 0.3mm


Having this data, what would you recommend me Arno to do?

Hope this data will be very helpful for all...

BR,
Theo
 
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