My alignment, for sake of discussion

Rusty · 01-15-2022, 08:49 AM

Quote:

Originally Posted by Tractionless

Rusty,

What is the result of running so little toe and equal amounts front/rear?

I've read the rear number should be double the front or you're looking at "rear end stepping out" troubles.

I'm at .094 front / .188 Rear on my street car with -1* camber which is REALLY saving the insides of my rear 305's and still provides for plenty of spirited driving handling. Camber goes more negative under acceleration (weight transfer) so trying to keep more rubber on the road in straight line situations. Watching the technician pull down on the rear end while on the rack even changes it significantly! Front suspension is OE, ride height OE.

I've also seen .125/.250 mentioned for toe.

You never want negative toe in the rear. That will give you snap-oversteer. Only full blown race car with a experienced driver will benefit from it. Keeping the toe front and rear just positive will make the car react quicker. To some, it may feel nervous. Camber on the rear. I don't like to go over -1.8. Some will set it at -2.0 or more. That is more for using full slicks. The camber curve on the rear suspension is quite steep. The more you compress it. The more negative camber you will get. As you have seen. My tire set up is 285/35-19 front and 345/30-19 rear. The outside edge of my rear tires barely make contact with the ground at -1.8 camber. I'm at -1.7 now. Soon as the fronts wear out. I'm putting 295/35-19 on. Really want to try 325's in the front.

Tractionless · 01-15-2022, 09:56 AM

Quote:

Originally Posted by Rusty

You never want negative toe in the rear. That will give you snap-oversteer.

My tire set up is 285/35-19 front and 345/30-19 rear. The outside edge of my rear tires barely make contact with the ground at -1.8 camber. I'm at -1.7 now. Soon as the fronts wear out. I'm putting 295/35-19 on. Really want to try 325's in the front.

Gotcha, the toe numbers I quoted above are positive. Not sure the benefit of running double rear toe in comparison with the front as posted and reflected in Nissans factory data. Any ideas?

Meaty tire setup there. I noticed a big seat of pants power gain stepping down from 325/30/19 to 305/35/19 most likely due to lower overall gearing, weight and less friction on the road with the 305's. Loved the 325 look but can't justify the "power loss." At -1* rear camber I have maybe 1/2 of outer tread not on the road which is fine as it contacts in corners and I don't get on the sidewalls.

Still love getting behind the big body Chargers, Challengers and Mustangs and seeing their OE tires/wheels that look like spares compared with our Z's.

Red Voodoo · 01-15-2022, 12:32 PM

When glancing through the SPL catalog, it appears that there's a lot that can be done to improve the suspension of these cars. Besides the OE limits of alignment adjustability, are there other "weak" points in this system that one could upgrade or refresh in a street car that would make any significant difference in everyday driving?

Something that comes to mind could be suspension bushings due to the age of the car (although, mileage is only 41k, so I'm not sure if that plays a factor).

Thoughts?

Rusty · 01-15-2022, 02:33 PM

Quote:

Originally Posted by Red Voodoo

When glancing through the SPL catalog, it appears that there's a lot that can be done to improve the suspension of these cars. Besides the OE limits of alignment adjustability, are there other "weak" points in this system that one could upgrade or refresh in a street car that would make any significant difference in everyday driving?

Something that comes to mind could be suspension bushings due to the age of the car (although, mileage is only 41k, so I'm not sure if that plays a factor).

Thoughts?

I got the whole SPL catalog on my Z.

Red Voodoo · 01-15-2022, 03:15 PM

Quote:

Originally Posted by Rusty

I got the whole SPL catalog on my Z.

Car goals.

01-15-2022, 12:32 PM	#3 (permalink)
Red Voodoo Base Member Join Date: Feb 2019 Location: NE Tennessee Age: 51 Posts: 142 Drives: a hard bargain! Rep Power: 8	When glancing through the SPL catalog, it appears that there's a lot that can be done to improve the suspension of these cars. Besides the OE limits of alignment adjustability, are there other "weak" points in this system that one could upgrade or refresh in a street car that would make any significant difference in everyday driving? Something that comes to mind could be suspension bushings due to the age of the car (although, mileage is only 41k, so I'm not sure if that plays a factor). Thoughts? __________________ 2010 QAB Zed Roadster \| Touring \| Sport \| Navigation K&N \| Z1 \| Swift \| Koni \| Eibach \| SPL \| SPC \| Ichiba \| Evo-R

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