What sort of mileage is expected on front shocks, especially a 135i? Mine is a first year 2008 and I switched from run flats very quickly due to the very hard impacts even when new. Standard tires have been much better but seems like the roads a lot rougher lately.

Morning Mike 

Welcome to the Forum

Seems you posted in the X5 slot not 1 series

Suspension shocks and bushes dependent on use I always think 80 to 100k is the point when it all starts to get a bit stiff and jolty (bit like me as I get older) My x5 4.6is I have changed all bushes twice and shocks once, the E70 I have just ordered a suspension rebuild kit (bushes and arms front and rear) My wife's Subaru shocks and bushes were changed at 75k. That keeps the ride on our cars as they should be.

What it doesn't account for is the state of our roads in Sussex, local to us is a road (bus route) through a housing estate I think if they ploughed it, it would be smoother. So, you may be suffering from a combination of hardening bushes, low profile tyres and a stiffening body 😂 (yours not the car)

Dave