Teins get softer after a long journey?

Scott560 · Post by **Scott560** » Mon Jun 01, 2020 11:17 am

So I had to drop off a PC for a family member, which warranted a good 3+ hours in the car.

On the way there, I was realising that the car rides like garbage. I suspect this is due to:

Yellow strong flex bushes (practically solid, unlike the red ones)
Teins flex Z coilovers.
went for 40 profile tyres on the motegi 17s instead of 45.

However, on the journey back, i noticed the ride had become more compliant (it was about 10pm at this point so cooler outside).

Its not something I've noticed before. perhaps I just need to do more experimentation with the damping setting and tyre pressures? Perhaps the root cause of the trouble is the springs are too stiff? I only wanted a little bit stiffer than standard, but i think perhaps the spring rates are too high/stiff, for a slammed looked.

I realise its all very subjective - perhaps we all need a meet when the social distancing is over, compare and contrast session...

Post by **RattyMcClelland** » Mon Jun 01, 2020 8:01 pm

What tyre width?

Scott560 · Post by **Scott560** » Mon Jun 01, 2020 8:46 pm

I'm running 215/40/17 Michelin PS4. I'm wondering if in the recent hot weather the tyre pressures had raised a fair bit... i had been running 2.2bar same as the 16s but this might have been last checked a few weeks before it warmed up, suspect i need to go a touch lower (2 / 2.1 bar perhaps).

Post by **RattyMcClelland** » Mon Jun 01, 2020 11:33 pm

Could be that. I ran the PS4 in 245/40/17. Great tyre but a bit spongy and lacks a sporty direct feel but excellent grip and comfort.
215/40 is on the thin side for me personally

Scott560 · Post by **Scott560** » Tue Jun 02, 2020 7:04 am

Accord type r says 35psi 2.4bar in the front. 31pai in the rear. That's for 45profile.

I'll have an experiment at the weekend and go from there

YouTube · Post by **Sailor** » Wed Jun 03, 2020 12:02 am

We had Teins on the first ATR. They covered many tens of thousands of miles and at no time did it feel like they got softer.

Scott560 · Post by **Scott560** » Wed Jun 03, 2020 8:56 am

Guessing that it must be the tyre pressures then that its sensitive too. This would make the most sense as the temp drop on sunday evening was quite pronounced.

If you still have the ATR/ owners manual, can you confirm the tyre pressures for ATR running 215/45/17 on the 7jj rims (motegi style). I guess this is the closest cousin for the prelude in terms or power/weight over the axles.

I suspect that i have ruined the daily driving ability with my choice of components, if i run the pressures too low then i risk tyre damage which im not keen on lol

YouTube · Post by **Sailor** » Mon Jun 08, 2020 9:39 pm

I think we use to run at 34 psi (Fronts) and 32 (rear). That was the theory, anyway. In practice, the tyres were a bit warm by the time I got to check them and I'd just set the gauge for all at around 2.2 bar.
I found it worth dropping to 1.8 bar before setting out on a (rare) track day.
For general use, we normally ran Falken ZIEX tyres.