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Keep in mind the treadwear ratings are subjective numbers for each tire manufacturer. And whether it's a 100 TW or not, none of the max performance summer tires will perform well in snow or rain. Hell, the R-compound tires I use for SCCA Majors racing are rated at 40 TW level and will hydroplane...

Unfortunately, that many suspension mods installed at the same time makes it impossible to evaluate how any single mod performed. Did you have the Swift springs installed earlier than the swaybars, for example?

That is indeed a Z33 Touring model in Redline. The paint correction of the paint looks really good. Mind me asking how much a professionally done paint correction job cost?

Just to provide some perspective: Sunoco GT 100 octane race fuel is $13.38/gallon at High Plains raceway in Colorado. My T3-spec 350Z finished second and third in two SCCA Majors races over the weekend, and is currently tuned for 100-octane fuel. I may have to think about going back to a...

Beyond reducing body roll, how do the swift springs impact side-to-side transitions? Do they make the Z quicker to respond than OEM? How about under braking? is there less dive under heavy braking? Can you feel what the car is doing more? When I added Eibach Pro-kit springs to my Redline Z33...

That's a clean look! I'd be tempted to keep it.

Roll Avs, roll!

I'd suggest looking up a local automotive upholstery shop and checking to see if they can match the color of those trim and bolster pieces. Likely a cheaper solution depending on where you live.

Costco premium is my #1 choice.

Any idea what these Rays wheels weigh?

Do tell- what kind of oil, filter and interval are you using/observing?

Why not start a UOA thread to begin building an objective database?

You're welcome. Maybe the tech missed checking the headlight level during the PDI.

Why not use your warranty and have the dealership inspect their adjustment of the headlights?

Not a good idea, as over torquing lugs have been known to warp hot rotors. After years of racing Zs, I suggest 85 ft/lbs applied in a star pattern works best. Never lost a wheel on the street or track using this method.

I like the Eibach prokits in my track Z33, but they are progressive (vs. linear) springs. They do help handling overall, but you feel bumps and potholes more on ride. They also lower the Z enough that ground clearance and camber setup become issues. Are you saying the Swift springs don't have...

I still have my '03 preorder Redline track and replaced the seats with newer power models. Been working on restoration details this summer and it's looking good after almost two decades.

Likely there are no changes between the '23 and '24 model years.

The QC guys at the plant are gonna be crushed. No kidding- those folks take their job very seriously.