Measurement request
- Thread starter nsxsupra
- Start date
I have a 91, stock height, with Toyo T1-S 225/45-16 on front, and 255/40-17 on rear (94 OEM wheels). My measurements are:
Front: 25.375"
Rear: 26.25"
I know my tires are not the stock size, but hopefully this will help you.
Front: 25.375"
Rear: 26.25"
I know my tires are not the stock size, but hopefully this will help you.
Compared with the stock '94-01 tire sizes, those tire sizes add 0.18 inch in height to the front and 0.16 inch to the rear.Autophile said:
Dang. If you hadn't asked this, I wouldn't have seen that my car's
ride height is out of spec.
I have a 1995 NSX-T with no suspension mods. Tires and wheels are
OEM 16/17. The tires are worn (about 25% of their useful tread remaining).
Measured from the floor to the underside of the metal arch at its highest point:
front: 639mm
rear: 682mm driver side, 675mm passenger side
After seeing the mismatched heights in the rear, I checked the ride height
as described on p. 18-6 of the service manual (distances from floor to
centers of particular bolts in the suspension). I measured:
162mm/163mm front (spec is 170-180mm)
209mm/204mm rear (spec is 213-223mm).
What causes a car to sit lower than normal?
Will old shocks do that, or can only springs cause the height to be off?
ride height is out of spec.
I have a 1995 NSX-T with no suspension mods. Tires and wheels are
OEM 16/17. The tires are worn (about 25% of their useful tread remaining).
Measured from the floor to the underside of the metal arch at its highest point:
front: 639mm
rear: 682mm driver side, 675mm passenger side
After seeing the mismatched heights in the rear, I checked the ride height
as described on p. 18-6 of the service manual (distances from floor to
centers of particular bolts in the suspension). I measured:
162mm/163mm front (spec is 170-180mm)
209mm/204mm rear (spec is 213-223mm).
What causes a car to sit lower than normal?
Will old shocks do that, or can only springs cause the height to be off?
This is not a very accurate way to measure ride height and can be misleading.
I suggest that you refer to the tech. manual found here on Prime's home page for the correct method of measuring ride height. That's the best way to do it.
BTW that is a really nice photo of your car.
I suggest that you refer to the tech. manual found here on Prime's home page for the correct method of measuring ride height. That's the best way to do it.
BTW that is a really nice photo of your car.
Last edited:
pbassjo said:
Agreed. Measure from the highest point on the inside of the fender to the center line of the hub.
Tom noted this in the fourth post in this topic...Ojas said:
He sure did. I completely missed that.nsxtasy said:
The height spec in the manual is for a 91 with the 15"/16" wheels and tires. How much height difference is there between that tire/wheel combo compared to the 94-01 16"/17" dimensions?
The FAQ gives diameters 23.1" front and 24.9"rear for 1991-1993, 23.6" and 24.7" for 1994-1997. So the difference in height associated with going from OEM 15/16 to OEM 16/17 is +0.25" front, -0.1" rear.Autophile said:
The specs on page 18-6 in the 1995 manual are the same as in the (online) 1991 manual, despite the different tire sizes used in the two model years. I've never known whether that is a lapse in the manual, or whether different suspension parts offset the tire size differences.
In any case, I'm still interested to hear any thoughts on the question I'd asked earlier on in this thread (what causes low ride height--can old shocks do that, or ...?) .
Yup. More precisely, it's +6.95 mm (+0.274 inch) front and -1.8 mm (-.071 inch) rear.Tom239 said:
Interesting question.Tom239 said:
Still a good question. Let's get Larry on the phone...Tom239 said:
The primary cause would be spring sag IMO. More common in aftermarket sprongs like Eibach then OEM.
Tom,
When you say your spec is off, do you really have any idea if the floor you are measuring on is flat? You really need to do this on a rack for this purpose or a perfectly level concrete pad found at many racetracks.
HTH,
LarryB
Tom,
When you say your spec is off, do you really have any idea if the floor you are measuring on is flat? You really need to do this on a rack for this purpose or a perfectly level concrete pad found at many racetracks.
HTH,
LarryB
Good point. I measured in my garage (concrete floor). It's reasonably flat (shows very close to level with a carpenter's level) but I can see how a dead-flat surface would be the ticket for this measurement.Larry Bastanza said:
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