vvpacc

22 hours ago, Vadim said:

The 3rd generation of RX350 and RX450h have identical suspension parts. Weight is also roughly the same, so I would expect no issues with different springs / shocks characteristics.

Thank you. That gives me confidence. I will be left only with being worried about the fuel consumption, but with 7000 miles per year, its not that much of a pain.

23 hours ago, Herbie said:

Have a look here at this place on eBay

A member here bought them for his RX300 conversion but they also do a set for the RX350. Also have a read of his thread below:

 

 

Thank you. I already looked at the sellers eBay profile yesterday, also read through the thread. This kit seems to be for the previous generation, I am looking for MY2010, but should be similar price-wise. Intercars and autodoc can do wonders in terms of prices, but only once you have the part number.

41 minutes ago, Vadim said:

The replacement of air suspension to sprung suspension on RX450h mk3 is technically possible, but you need to replace both front and rear, and disable the air suspension controller.

The front is easy, because the spring is on the strut, and the fixing points are identical for air and sprung.

The problem is at the rear: since sprigs are separate from shock absorbers, and the lower rear wishbone is different for air and spring suspension, you’ll have to replace the wishbones(£50 each side used) add top spring mounts (£30 each side used), put springs (£100 each side new), and ideally replace shock absorbers (the ones for sprung suspension have longer travel). Add labour (about 3 hours front & rear) and all four wheels alignment (£60).

I also find that it is difficult to find used rear springs for this car, because they tend to snap with age.

With all the replacements considered, the rear suspension swap becomes quite expensive.
 

There are also reports online, that some traction safety systems may stop working if you remove the Air suspension system fuse.

 

 

 

 

Thank you. I am looking at a RX350 President, but I guess its similar to RX450 in terms of suspension. Labor is not an issue, i will probably get quoted about 40 GBP / hour at a friends place. Parts are, since I almost have no part numbers for the normal suspension. Found the air suspension onces + the air compressor. I mean, even at what you quoted with prices, swapping the entire suspensions seems cheaper than 1 airbag replacement + labor 🙂

From all that discussion about trims, it did not become clear - is it possible to convert to "normal suspension" or not, and what does it actually take? I am aiming at RX350 from 2010, gonna take a look at one the coming week, but air suspension does not make sense to me. The compressor alone is priced at 1.6K GBP, or at least the price I was quoted with.