Alignment question

[goldNSX]

Hi

I know we've talked so much about the alignment. But I'm still not sure about the settings of my NSX.
I've attached two pictures, one is the setting made on the 15th of May 2003 which ended in high tire wear (6'000 km). The correction of this was made on the 20th of August 2004. The forth column shown the results. Vorderachse = Front, Hinterachse = Rear, Spur = toe, Sturz = camber.
Can anybody help me out. I'd like a setting that saves tires with still good crisp on the edges below 60 mph.

Thanks,
Thomas

 

[goldNSX]

I forgot to mention that the car is lowered with Eibach/Bilstein on the upper perch.

 

[Gerard van Santen]

Hi

I know we've talked so much about the alignment. But I'm still not sure about the settings of my NSX.
I've attached two pictures, one is the setting made on the 15th of May 2003 which ended in high tire wear (6'000 km). The correction of this was made on the 20th of August 2004. The forth column shown the results. Vorderachse = Front, Hinterachse = Rear, Spur = toe, Sturz = camber.
Can anybody help me out. I'd like a setting that saves tires with still good crisp on the edges below 60 mph.

Thanks,
Thomas

Where are the pictures

 

[goldNSX]

Where are the pictures

Sorry, forgot them

 

[Gerard van Santen]

Sorry, forgot them

OK, now we know that you forgot'm, but where are they...

 

[goldNSX]

OK, now we know that you forgot'm, but where are they...

here we are. actually they were too big. the first one is after Eibach installation, the second one year after that.

 

[Gerard van Santen]

here we are. actually they were too big. the first one is after Eibach installation, the second one year after that.

My opinion:
I think your total toe rear is a bit low. It's better to go somewhere around 0.35 and 0.40 degrees or around 4mm
If you can manage to go for approximately -1.5 degrees for your rears, it would be better, but I don't know if that is possible, because you lowered your car.

Your totall front toe is way off. You have toe in. It has to be toe out. Somewhere around -0.25 and -0.30 degrees or around 3mm.
Front camber is reasonable OK. Perhaps you can equalize them better. But that will be tough with those low numbers.

Caster is lower than OEM specified (8 degrees). But that's not a problem with your setup, because left and right is almost equal and that is most important.

Good luck,
Gerard

 

[goldNSX]

Thanks for your opinion, Gerard. I'm a little bit confused about the calculations:

In the FAQ we have the numers:

Factory front alignment (ALL years):
Total toe: -3.5mm +/- 1mm
Camber: -20 min +/- 30min (-0.33 deg +/- 0.5 deg)
Caster: 8 deg.

1993+ Factory Rear alignment with OEM tires
...
Total toe: 4mm +/- 1mm*
Camber: -1 deg 30 min +/- 30min (-1.5 deg +/- 0.5 deg)

4 mm = tan-1(4/1000) = 0.23 degrees = 13.8 minutes?
6 mm = tan-1(6/1000) = 0.34 degrees = 20.6 minutes?

Yes, I see that my front toe is way off. Does the caster mean something like a previous damage?

The car was lowered about 3 cm with Eibachs. Camber -2 on the rear is the minimum possible, my garage told me.

Thanks in advance,
Thomas

 

[flight]

The front toe can make a hige difference to the handling of the car. Original owner had it set at pretty much 0mm to conserve tire wear, but the car understeered very badly. So much so that I would slide THROUGH rounadbouts instead of around them at medium pace.

Changed the toe back to OEM spec and now I am much happier.