Lotus Elan

6x14 Minilite 185/60x14 RE71R tyre issues

PostPost by: roebuck » Tue Jul 10, 2018 7:00 am

I am about to change the rear spring units on my 1970 S4 SE to accomodate these wheels & tyres.
Can you advise if there is a problem with tyre clearances on the guards when suspension at max travel.

I have the problem that on full lock the front tyres hit the sway bar. I have been told that I may have the wrong rack.
Can you please suggest a solution. Is there a way of reducing the rack travel ie to increase the turning circle.

I am in Australia
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PostPost by: rgh0 » Tue Jul 10, 2018 12:35 pm

With the right wheel offsets they should fit at the rear assuming the body is symmetrical which they often are not.

At the front they will hit the roll bar with the standard rack lock stops which is not an issue on practice. i have driven my Elan for 40 years with the rack stops being effectively the wheels hitting the roll bar. A bigger issue will be the front tyres will hit the body work on full opposite lock with body roll or when going up a drive at an angle so you need to be careful in these situations.

You can play with front wheel offsets being slightly different and in more than the rear wheels to help tailor the fit front to rear but the benefits are small for the downside of not being able to swap wheels front to rear ( been their done that)

cheers
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PostPost by: dougal cawley » Tue Jul 10, 2018 3:20 pm

Hi

Can i ask why you would want to change the car to fit a wrong size tyre?
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PostPost by: roebuck » Wed Jul 11, 2018 6:44 am

Hi Dougal,
It is impossible to obtain correct size tyres in Aus.
I have standard rims also 5x13 Minilite rims.There are no suitable tyres here.
Rob
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PostPost by: roebuck » Wed Jul 11, 2018 6:47 am

Hi Rohan,
Thanks for your help.
Great to know the problem with the front tyres hitting the sway bar. I feel better about this now.
I have found the way to fix the rear by replacing spring unit with a smaller diameter one thus enabling the wheel to fit.
Thanks again
Rob
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PostPost by: rgh0 » Wed Jul 11, 2018 9:50 am

roebuck wrote:Hi Dougal,
It is impossible to obtain correct size tyres in Aus.
I have standard rims also 5x13 Minilite rims.There are no suitable tyres here.
Rob


It really depends on what you use the car for and what sort of tyres you are looking for . The are many 186/60 and 175/60 x 13 performance tyres. These gear the car down a little but given Australia's 100 km speed limits that's not a great problem. You can always fit a 3.54 diff or a 5 speed box if you want more relaxed cruising with the smaller diameter tyres

cheers
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PostPost by: roebuck » Thu Jul 12, 2018 1:17 am

Hi Rohan,
The car came with 175/70x13 Bridgestone Ecopia tyres on the Minilite rims.Correct rolling radius but a crap tyre.
Also had worn out track tyres you suggested but they did not look good and as you say alter the gearing.
I am ordering the different rear struts that will resolve the problem.
Thanks Rob
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PostPost by: 1owner69Elan » Thu Jul 12, 2018 1:49 am

If you want to avoid using the ARB itself as a rack limiter by having the tire contact it and rub, you can instead readily install rack limiters as per this recent thread:

elan-mods-f31/bill-26s-t37259-75.html

Will keep your tires from being scrubbed on the inner edge.
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PostPost by: rgh0 » Fri Jul 13, 2018 11:31 am

roebuck wrote:Hi Rohan,
The car came with 175/70x13 Bridgestone Ecopia tyres on the Minilite rims.Correct rolling radius but a crap tyre.
Also had worn out track tyres you suggested but they did not look good and as you say alter the gearing.
I am ordering the different rear struts that will resolve the problem.
Thanks Rob


Most smaller rear diameter spring kits prevent the use of the standard Aeon rubber springs at the rear which can have serious bad effects on handling. Col Croucher at Elan trikbits in Wangarratta used to make a kit for a smaller rear spring to fit wider tyres and wheels but still large enough to fit the standard Aeon rubber spring. He runs wide 14 inch wheels on his S2 and worth talking to if doing this mod.

cheers
Rohan

PS you cant see what the tyres look like from the drivers seat but you can feel the grip of a good set of track day tyres :lol:
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PostPost by: dougal cawley » Tue Jul 17, 2018 1:41 pm

roebuck wrote:Hi Dougal,
It is impossible to obtain correct size tyres in Aus.
I have standard rims also 5x13 Minilite rims.There are no suitable tyres here.
Rob


Hi

It is easy to buy these tyres in Australia.

We ship these tyres all over the world https://www.longstonetyres.co.uk/classi ... /elan.html it only costs £ 150 to ship a full set of 5 to Aus

I cannot think it makes sense to spoil the handling of an Elan of all cars to save £ 150 in shipping

also it will probably cost you money to spoil your car

Any 60% profile tyre will handle really badly on an Elan, unless you changed loads more stuff to turn it into an absolute track car with a dreadful ride.

I think those boys at Lotus probably knew what they were doing, and they didn't even put 70% profile tyres on them, However doing that with the period Cinturato would not be so bad, but a completely modern 60% profile tyre, will be terrible.
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