Tire size for Enkei stock 18" wheels

Cmike2780 · 06-24-2010, 02:24 PM

I was wondering if anyone replaced the stock tires on the non-sport model wheels. How wide a tire can you go with these rims. I would like to keep the sidewall height the same. Any recommendations? The back ones right now just look way too narrow on this car.

KingZee · 06-24-2010, 02:35 PM

You can easily do 255 back 235 front without any issues...I think 265 back and 245 front may be fine as well but I'm not sure.

Cmike2780 · 06-24-2010, 02:46 PM

I was thinking more 275/40 for the rears. Will this fit? Will it look bad on these rims?

Jamaica · 06-24-2010, 03:31 PM

curious..why are you going with 18's?

Cmike2780 · 06-24-2010, 03:44 PM

Honestly, I think 18" is the sweet spot for grip, comfort and steering feel. The 19's look better though.

Jamaica · 06-24-2010, 04:03 PM

true

Jeffblue · 06-24-2010, 04:05 PM

I see a black z with 18's around a lot. Are you in nassau or suffolk?

Cmike2780 · 06-24-2010, 04:09 PM

I live in Nassau, but work in Suffolk (Hauppauge).

Jeffblue · 06-24-2010, 04:38 PM

oh word. i think i may have seen you on Underhill blvd. if you dont know where that is then i guess that wasn't you.

Cmike2780 · 06-24-2010, 05:10 PM

That's in Syosett right. I driven by there once or twice, but I don't think that was me. I'm on rt 106 a lot, but mostly around Hicksville and the south shore.

BGTV8 · 06-24-2010, 06:58 PM

Quote:

Originally Posted by Cmike2780

I was wondering if anyone replaced the stock tires on the non-sport model wheels. How wide a tire can you go with these rims. I would like to keep the sidewall height the same. Any recommendations? The back ones right now just look way too narrow on this car.

I have an Australian-spec MY09 Z34 which has the Akebono brakes and 18" EOM wheels (8" at the front and 9" at the rear) and I have run 235/40R18 Kumho KU36 on the front and 275/35R18 on the rear with absolutely no problems. The car sits 3/4" lower on the road and you do get improved primary road grip as the CoG is ~20mm lower, but at the cost of speedometer overreading by another 4% - at an indicated 110km/hr I am onyl travelling at 101kph (69mph = 62mph). Side benefit is that the overall gearing is a little lower so accelration is improved ..

If you wish to keep the sidewall height the same, you will need to find:
Front: 235/45R18 which is under size by 8mm overall diameter
Rear: 265/40R18 which is undersize by the same amount

These are not common sizes but you may have access to a superior range of sizes in the US than we do in the land of OZ.

RB

Cmike2780 · 06-25-2010, 09:15 AM

Thanks, that's really helpful information.

KingZee · 06-25-2010, 04:55 PM

noob question but is it the sidewall height that throws off the speedometer?

Cmike2780 · 06-25-2010, 05:32 PM

Quote:

Originally Posted by KingZee

noob question but is it the sidewall height that throws off the speedometer?

Increasing sidewall height increases overall diameter and vice versa, which in turn changes how long it takes a tire to rotate. So the simple answer is yes.

Jeffblue · 06-28-2010, 11:33 AM

Quote:

Originally Posted by Cmike2780

That's in Syosett right. I driven by there once or twice, but I don't think that was me. I'm on rt 106 a lot, but mostly around Hicksville and the south shore.

yea its in syosset. I'm on 106 in hicksville occasionally. Good luck with your tire choice. I'd try and stay withing +-3% of stock overall ride height

Try this:
Tire Dimensions Made Simple - Discount Tire

06-24-2010, 02:24 PM	#1 (permalink)
Cmike2780 A True Z Fanatic Join Date: Jun 2010 Location: Long Island Posts: 5,059 Drives: slowwww Rep Power: 29	Tire size for Enkei stock 18" wheels I was wondering if anyone replaced the stock tires on the non-sport model wheels. How wide a tire can you go with these rims. I would like to keep the sidewall height the same. Any recommendations? The back ones right now just look way too narrow on this car. __________________ [09][MB][6-Spd MT][Touring][Stillen Gen III][K&N][Borla CBE][Evo-R] [ArchitTEK Photography]

06-24-2010, 02:46 PM	#3 (permalink)
Cmike2780 A True Z Fanatic Join Date: Jun 2010 Location: Long Island Posts: 5,059 Drives: slowwww Rep Power: 29	I was thinking more 275/40 for the rears. Will this fit? Will it look bad on these rims? __________________ [09][MB][6-Spd MT][Touring][Stillen Gen III][K&N][Borla CBE][Evo-R] [ArchitTEK Photography]

06-24-2010, 03:44 PM	#5 (permalink)
Cmike2780 A True Z Fanatic Join Date: Jun 2010 Location: Long Island Posts: 5,059 Drives: slowwww Rep Power: 29	Honestly, I think 18" is the sweet spot for grip, comfort and steering feel. The 19's look better though. __________________ [09][MB][6-Spd MT][Touring][Stillen Gen III][K&N][Borla CBE][Evo-R] [ArchitTEK Photography]

06-24-2010, 04:09 PM	#8 (permalink)
Cmike2780 A True Z Fanatic Join Date: Jun 2010 Location: Long Island Posts: 5,059 Drives: slowwww Rep Power: 29	I live in Nassau, but work in Suffolk (Hauppauge). __________________ [09][MB][6-Spd MT][Touring][Stillen Gen III][K&N][Borla CBE][Evo-R] [ArchitTEK Photography]

06-24-2010, 05:10 PM	#10 (permalink)
Cmike2780 A True Z Fanatic Join Date: Jun 2010 Location: Long Island Posts: 5,059 Drives: slowwww Rep Power: 29	That's in Syosett right. I driven by there once or twice, but I don't think that was me. I'm on rt 106 a lot, but mostly around Hicksville and the south shore. __________________ [09][MB][6-Spd MT][Touring][Stillen Gen III][K&N][Borla CBE][Evo-R] [ArchitTEK Photography]

06-24-2010, 02:35 PM	#2 (permalink)
KingZee A True Z Fanatic Join Date: Feb 2010 Location: Glendale, CA Age: 41 Posts: 2,612 Drives: Focus ST Rep Power: 423	You can easily do 255 back 235 front without any issues...I think 265 back and 245 front may be fine as well but I'm not sure.

06-24-2010, 03:31 PM	#4 (permalink)
Jamaica A True Z Fanatic Join Date: Mar 2010 Location: SoCal Posts: 15,362 Drives: Under boost Rep Power: 73	curious..why are you going with 18's?

06-24-2010, 04:03 PM	#6 (permalink)
Jamaica A True Z Fanatic Join Date: Mar 2010 Location: SoCal Posts: 15,362 Drives: Under boost Rep Power: 73	true

06-24-2010, 04:05 PM	#7 (permalink)
Jeffblue A True Z Fanatic Join Date: Dec 2009 Location: NY Age: 36 Posts: 9,192 Drives: Z32TT & 335xi Coupe Rep Power: 37	I see a black z with 18's around a lot. Are you in nassau or suffolk?

06-24-2010, 04:38 PM	#9 (permalink)
Jeffblue A True Z Fanatic Join Date: Dec 2009 Location: NY Age: 36 Posts: 9,192 Drives: Z32TT & 335xi Coupe Rep Power: 37	oh word. i think i may have seen you on Underhill blvd. if you dont know where that is then i guess that wasn't you.

06-25-2010, 09:15 AM	#12 (permalink)
Cmike2780 A True Z Fanatic Join Date: Jun 2010 Location: Long Island Posts: 5,059 Drives: slowwww Rep Power: 29	Thanks, that's really helpful information. __________________ [09][MB][6-Spd MT][Touring][Stillen Gen III][K&N][Borla CBE][Evo-R] [ArchitTEK Photography]

06-25-2010, 04:55 PM	#13 (permalink)
KingZee A True Z Fanatic Join Date: Feb 2010 Location: Glendale, CA Age: 41 Posts: 2,612 Drives: Focus ST Rep Power: 423	noob question but is it the sidewall height that throws off the speedometer?

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