Lotus Elan

Elan S4 tyres

PostPost by: billwill » Tue May 23, 2017 1:09 am

umbyfer wrote:Rear Tire, size problem using new modern tires. I used to use Dunlop SP10 155/80 13 in my sprint in original setting without any problems; now the SP10 are dicontinued and replaced by the Dunlop SP Streetresponse. Here the problem on the rear: they are wider than SP10 about 7 mm. The "shoulder of the tire" is more round; The SP10 was straight. The consequence is that the tire touchs the rear plate supporting the spring of the suspension.
I am looking for tires with straight shoulder. Thank you for any info from your experience.



A common 'fix' for this kind of problem is to use your wheel hammer to change the shape of the circular tray of the spring into a tray with a bit of flat on the side nearest the wheel. Mine has this and I don't remember when it was done. :shock:
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PostPost by: umbyfer » Tue May 23, 2017 6:55 am

billwill wrote:
umbyfer wrote:Rear Tire, size problem using new modern tires. I used to use Dunlop SP10 155/80 13 in my sprint in original setting without any problems; now the SP10 are dicontinued and replaced by the Dunlop SP Streetresponse. Here the problem on the rear: they are wider than SP10 about 7 mm. The "shoulder of the tire" is more round; The SP10 was straight. The consequence is that the tire touchs the rear plate supporting the spring of the suspension.
I am looking for tires with straight shoulder. Thank you for any info from your experience.



A common 'fix' for this kind of problem is to use your wheel hammer to change the shape of the circular tray of the spring into a tray with a bit of flat on the side nearest the wheel. Mine has this and I don't remember when it was done. :shock:


It sounds an easy solution... not elegant but efficient. The problem is that the "contact point" is where the tray is L shape so here the hammer cannot do nothing. The tray must be cut and re-welved.
If you are able to send a picture... thank you.
Another solution could be a 3 mm spacer beetwen wheel and hub or beetwen hub and external bearing... maybe...
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