18" RPF1 for Z Sport

[chzcake01]

Hi Everyone,

I previously owned a 350Z and 370Z with factory 19" wheel/tire sizes and now looking to stay with 18" for my Z Sport (not opposed to 19" though).

Looking at a set black RPF1 on Z1's site and see 18x9.5 +15 (Front) 18x10.5 +15 (Rear).

How well would these fit on our cars?

Thanks!

 

[Thefunk]

https://www.willtheyfit.com/

Also
https://www.tacomaworld.com/tirecalc?tires=255-40r19-255-45r19

This is for technical and visual fitment, but as far as preference and taste, those answers will vary greatly

 

[FSUZ33]

Looking at a set black RPF1 on Z1's site and see 18x9.5 +15 (Front) 18x10.5 +15 (Rear).

Compared to stock Sport setup:
Front poke +26mm. No issues with inner clearance.
Rear poke +19mm. Inner clearance: 19mm further in than stock Sport, but that's still 8mm further out than the stock NISMO fitment, so inner clearance shouldn't be an issue.

 

[chzcake01]

https://www.willtheyfit.com/

Also
https://www.tacomaworld.com/tirecalc?tires=255-40r19-255-45r19

This is for technical and visual fitment, but as far as preference and taste, those answers will vary greatly

Thanks for these links, playing around with the calculations now.

 

[chzcake01]

Compared to stock Sport setup:
Front poke +26mm. No issues with inner clearance.
Rear poke +19mm. Inner clearance: 19mm further in than stock Sport, but that's still 8mm further out than the stock NISMO fitment, so inner clearance shouldn't be an issue.

Thanks, those are the same numbers I got using the provided links above.

So they'll sit pretty flush with the fenders? It's storming here right now so I can't go measure.

 

[FSUZ33]

So they'll sit pretty flush with the fenders? It's storming here right now so I can't go measure.

The outer lip on the front will sit like a NISMO with 12mm spacers. You‘re talking 18’s, not 19’s, so there’s a small difference, but it SHOULD be fine.

Rear is fine. Same outer position as a NISMO with 8mm spacers, which has been proven to work With 19’s.

A tiny bit hesitant on the front, could lightly rub, but my guess it’s fine. Should be a nice tight fit. You could get away with meaty tires on the rear, but I’d stick with appropriate sizes for the wheels to be safe.

 

[Thefunk]

The outer lip on the front will sit like a NISMO with 12mm spacers. You‘re talking 18’s, not 19’s, so there’s a small difference, but it SHOULD be fine.

Rear is fine. Same outer position as a NISMO with 8mm spacers, which has been proven to work With 19’s.

A tiny bit hesitant on the front, could lightly rub, but my guess it’s fine. Should be a nice tight fit. You could get away with meaty tires on the rear, but I’d stick with appropriate sizes for the wheels to be safe.

What is your ride height? Just for reference my ride was set to 4.5" from rim edge to fender all around. That was measured with the stock 19" wheels (performance).

I have since changed to these wheels
18" 10.5" 12mm offset rear
18" 9.5" 22mm offset front

No rubbing.

 

[chzcake01]

The outer lip on the front will sit like a NISMO with 12mm spacers. You‘re talking 18’s, not 19’s, so there’s a small difference, but it SHOULD be fine.

Rear is fine. Same outer position as a NISMO with 8mm spacers, which has been proven to work With 19’s.

A tiny bit hesitant on the front, could lightly rub, but my guess it’s fine. Should be a nice tight fit. You could get away with meaty tires on the rear, but I’d stick with appropriate sizes for the wheels to be safe.

Thanks again for your insight. I'm looking at these sizes:
Front 245/45/18
Rear 275/40/18

I emailed Z1 for their recommendation for tire sizes, just waiting for response.

 

[chzcake01]

What is your ride height? Just for reference my ride was set to 4.5" from rim edge to fender all around. That was measured with the stock 19" wheels (performance).

I have since changed to these wheels
18" 10.5" 12mm offset rear
18" 9.5" 22mm offset front

No rubbing.

I'm stock height. Any pics of your car with the 18's? If the RPF1s don't fit well then I'm leaning towards Gram Lights with the same sizes as yours.

 

[Thefunk]

I'm stock height. Any pics of your car with the 18's? If the RPF1s don't fit well then I'm leaning towards Gram Lights with the same sizes as yours.

 

[FSUZ33]

What is your ride height? Just for reference my ride was set to 4.5" from rim edge to fender all around. That was measured with the stock 19" wheels (performance).

I have since changed to these wheels
18" 10.5" 12mm offset rear
18" 9.5" 22mm offset front

No rubbing.

Thinking this was meant for @chzcake01 , but FYI...