Rear bush problems mk4

Duggan09 said:

Hello I have a 2015 ND 30k and developed the rear rattle, took to a mazda garage, telling me I need a new hub at £750, my car was bought from an independent garage so doesn't have a full mazda service history so I reckon a good will offer from mazda is unlikely. The mazda garage did offer to fit replacement bushes though if I could source them. Poly bush seem to have developed a set specifically for this purpose but can find anyone on any forum who has tried them and any forum discussion on fitting poly bushes seems to warn against due to a harsh ride. These bushes are blue as oppose to their standard orange though and marked as comfort ride though which makes me think they have taken a non race track approach to these particular bushes although they say they have been tested by a race team. Any thoughts out there on whether I should give them a shot?

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Hi Duggan,

This is what I wrote on your introductory post on here (see below)

Hi Duggan and welcome to the forum.

I must tell you that the 'bushes' that wear on this model are not bushes at all, but in fact spherical bearings (or rose joints) so not a simple 'bush' replacement I'm afraid.

There are bushes within the rear uprights (hub-carriers) but the noise you can hear is from those spherical bearings, which are not an easily replaceable item. I must also tell you that the bearings are a well known durability issue worldwide and you will find many posts about it on various MX-5 forums, including this one. They have proven to be under-engineered for our rough road surfaces and at 30,000 miles you have had the best out of them. Mine went at around 26,000 miles - some owners get more, some less - but they will fail eventually on ND models.

Regards,

Kev.