Today I took Audrey for a wheel alignment check - as wear on the inner edges of the two tyres that have just been rotated to the rear were noted on the MOT. Strange as a small adjustment was needed but no more than 3/4 of a turn according to the chap!
While the car was on a ramp he helpfully finally found the source of the occasional clonk that I get on rough roads - I was suspecting either the top mounts or the ARB bushes, but he confirmed there to be no issue with either. Instead, the steering rack has a smidge of internal play, but in his words "I really wouldn't change it based on that, it's only slightly worn and has a lot of life left in it, so I would leave it and monitor for now as it's a fair amount of work to change". The problem is, now I know, I can't un-know....
He is sending me a quote.
Also, I have experimented with lowering the tyre pressures - Since fitting the A3 Pepper Pot alloys, I have always used the full-load pressures of 35 PSI front / 38 PSI rear noted on the fuel cap flap sticker in the interests of economy, BUT these pressures are for 175/60/15 tyres, not the 185/60/15's that Audrey now wears. I had just assumed the difference was negligible, but have just discovered that really this means the pressures should be reduced by 3 PSI all round to compensate - so 32 front / 35 rear - which I was not aware of. I have noticed in the past that traction under heavy braking is less than ideal, not to mention that the ride is very firm over bad / bumpier lanes typical of those locally to me!
Interestingly, the 3 PSI reduction definitely seems to make a decent ride improvement, with noticeably improved handling of holes and ridged bumps in the road that are common with fairly broken and worn Devon lanes - so my conclusion is our aluminum friends are surprisingly sensitive to tyre pressure changes. I may reduce by the same again and see what difference that makes - but then again, I'm pretty happy with how it is now.