18 x 10.5 square fitment

[OptionZero]

What lowering springs and are you using camber plates? I have nismo version, not sure if it needs those.

lowering springs? No sir

Topline Aragosta Type-S coilovers
SPL Parts all adjustable arms

The Z has double wishbone front suspension, which does not use camber plates. Those are for MacPherson Strut design cars like the S chassis, EVO, WRX, GRC

There is no front camber/caster adjustment on the Z, you must get Front Upper Control Arms, with SPL parts or nismo rebrand recommended

 

[Maximum_Jars]

What lowering springs and are you using camber plates? I have nismo version, not sure if it needs those.

If you were aiming this at me, I'm running MCS coilovers. Ultimately, you'll see 99% the same clearances no matter what you use to lower in terms of coilovers. You may see some inner rub running stock front suspension as the springs are wider if you're going to go really aggressive, but I can confirm the 285's will fit just fine on the front with a +22 offset without any rub at all on oem suspension.

Optionzero is correct that camber plates don't work for our cars. Adjustable upper control arms need to be used. I'm running the Z1 forged arms, which I'll be selling soon here so I can experiment with the SPL as a comparison, but truth be told I expect them to be the same performance in the end. For clearance purposes they will all be the same.

 

[OptionZero]

If you were aiming this at me, I'm running MCS coilovers. Ultimately, you'll see 99% the same clearances no matter what you use to lower in terms of coilovers. You may see some inner rub running stock front suspension as the springs are wider if you're going to go really aggressive, but I can confirm the 285's will fit just fine on the front with a +22 offset without any rub at all on oem suspension.

Optionzero is correct that camber plates don't work for our cars. Adjustable upper control arms need to be used. I'm running the Z1 forged arms, which I'll be selling soon here so I can experiment with the SPL as a comparison, but truth be told I expect them to be the same performance in the end. For clearance purposes they will all be the same.

Years back Z1 had a defective batch of control arms, and from what I recall, it wasnt fun for anyone that had to deal with it. Their original control arm design was not adjustable on car either, so they are really late to catch up

As a practical matter, Z1 isn’t a manufacturing company. They are a label that sells basically everything. The level of involvement in design varies, but they are almost certainly sourcing from elsewhere

this is neither good nor bad, simply a reality of our world today. The takeaway is to do a little digging before jumping in on large purchases

One simple test is to look around the paddock, or watch what is used on the track. I see SPL stuff getting beaten on across all platforms and tracks and everyone loves them. Nismo is using them under their brand (with different colors). My alignment techs literally said thank you bc everything is adjustable on car with locking mechanisms. Thats why im pretty confident in SPL stuff

also used them on my S14

 

[mark5825]

Thanks both for the responses. My Nismo suspension feels alight, it just seemed like I was lacking lots of grip. Was hoping not to have to buy entire coilovers and wanted to just try new wheels/tires so I was looking at the suspension upgrade just to make sure there's clearance but sounds like I might not need any (getting -2.5 camber stock).

 

[trackratZ]

Years back Z1 had a defective batch of control arms, and from what I recall, it wasnt fun for anyone that had to deal with it. Their original control arm design was not adjustable on car either, so they are really late to catch up

As a practical matter, Z1 isn’t a manufacturing company. They are a label that sells basically everything. The level of involvement in design varies, but they are almost certainly sourcing from elsewhere

this is neither good nor bad, simply a reality of our world today. The takeaway is to do a little digging before jumping in on large purchases

One simple test is to look around the paddock, or watch what is used on the track. I see SPL stuff getting beaten on across all platforms and tracks and everyone loves them. Nismo is using them under their brand (with different colors). My alignment techs literally said thank you bc everything is adjustable on car with locking mechanisms. Thats why im pretty confident in SPL stuff

also used them on my S14

Very true, you gotta look at what's being used competitively, that's the quality stuff. I plan to get the SPL arms maybe next year. Will get baseline timings first with slightly lowered suspension and corner balance.

Z1 quality has been spotty, inconsistent with their labeled products, outsourcing has lessen the QC on parts.