CDM

Verrry interesting! Do the Pirellis cause more road noise? (Can you GET Dunlops in that size?) I guess it depends on what you want from a car this size. Is it bought by folk who want the comfort? Can't see TOO many sub-30s BMW aspirants after a LS 400, so 'dynamic' handling not so much a priority. Anyway, the standard car handles pretty well already, in the odd times, post United win, when elated I whizz home a bit more 'dynamically' from the pub...sorry, TV lounge. :)

OE Dunlops very quiet so Pirelli's slightly worse, but not bad. As I said, developed for Jaguar so well suited to Lexus.

The DHP wasn't meant to be super sporty, just look better and be a little sharper and more agile. However, people took to it and at one point it was making up 25% of LS sales !

Ah, OK (maybe). I have the 245/50/17's like CDM said.

Still not sure whether 31 psf is right though . . .

book sez 33 fr/39 rr. or 30/30 with 4 peeps. up to 100 mph.

up to 140 mph -that's you.....38/44 or35/35 w/4 peeps..

up to full loaded weight .....fat peeps plus bags? 44/49

225/60 r16 97w

Must check mine tomorrow. Got wheels refurbished recently.....

For use in the UK, always use the 4 people, up to 100mph figures - those superhigh values are 5 people plus luggage at max speed in Germany.

I suggest: 225/60x16 set at 30 psi F+R, 235/45x17 set at 33 psi F+R and 245/50x17 at 33 psi F+R for cars up to 99. Add 3 psi for "sporty driving" or speeds over 100mph.

Hi guys, my first post here for a while. I have had my 1999 LS400 for almost a year now. It is just a fantastic car but the one thing I wish was different would be that it did not have the DHP. I do find it very noticeable on bumps in the road, and there seem to be lots of those around here!

Haven't driven the "normal" car much to compare but I believe that this one does handle better with the DHP. Just that I would prefer the extra comfort to the sportiness, being a bit older than I was . . .

Still a pretty darn comfy ride of course, these things are all relative. Like someone said earlier, it comes down to personal preference. But I do sometimes ponder trading for a "normal" model. If anyone is interested in buying a DHP model, let me know. It might just make my mind up!

Hi, I am the guy who did DHP spec for LS 400. For reference - Spring rate + 10% only, Height -10mm all round, rear anti roll bar + 1mm to aid turn in. Tyres Pirelli P Zero 245/50x17 Jaguar spec( XK8?).

No change to dampers. Car was done to please Lexus MD, but dealers liked it so we began to sell it !

Ride wasn't bad, but clearly firmer than std. Any other tyre make much worse.

If you want ride quality back, just fit standard springs again.

Note- front suspension quite close to bump stoppers, so ride will suffer if springs have sagged with time.

Hope this helps.