Technical Wheel & tyre movement explination

Currently reading:
Technical Wheel & tyre movement explination

Joined
Mar 9, 2008
Messages
527
Points
287
Location
Heydon, Royston, Herts
Hi all!

Having bought 'Camel' without standard wheels or tyres I have no idea what they should look like. :confused:
Having bought new, wider tyres for 'Camel' (165R13), I am aware of some issues that I'll need to overcome. :(

The 2 Main issues are;
1. Rear tyre inside edge fouling the fuel filler pipe when the wheel travels into the arch.
2. Front tyre top edge protruding beyond the bodywork.

On the standard fitment, do the front tyres fit entirely inside the wheel arch?

Assumption No. 1
Because of the castor angle on the front hub. When the suspension compresses, the hub doesn't travel vertically, but in a cresent motion towards the car. This would suggest that even if the top edge of the tyre extends outside the arch, that by the time the tyre has travelled towards the arch, that the top edge of the tyre will tuck inside the arch.

Does this happen with standard fitment tyres??

Assumption No. 2
When anyone goes to full lock with their steering, by definition the top of the tyre is aiming for the wheel arch.
Should this suggest that the distance betweel the top of the tyre and the arch should always be greater than the compressed travel of the front suspension??

Otherwise when anyone hits a bump when on full lock, the tyre would foul the arch??

Sorry for the brain-pain all. Hope we can get to the bottom of this.

Also, stupidly I bought the 165/13's instead of the 165/70R13.
Mine have a profile of 82!! :bang:
 
Profile of 82? thats huge!

I had some 165r13 on Cinquecento wheels on my 2wd panda. never had any problems with turning on full lock. the top edge did protrude about an inch due to the 30.5 offset. not sure of the offset of the sei steelies, sure you'll know.

Cant comment on the fuel pipe, but if your producing a bash guard for it then you should be fine
 
Back
Top