Rim questions

[monstar147]

Hi,

I'm new here and my dad just gave me his 1970 240z. he bought the car brand new back in spring of 1970. Body is great, engine just need to be rebuilt. It has the stock slotted rims, but me being new school style, I want to put on a set of 17'

First of all- what is the bolt pattern size? 4-114.3?

2- If i got a set of 7x17 rims, off set of 40 mm-205/40/17. Will these fit? The tire diameter is pretty close. I plan to roll the fenders.

Can you please let me know?

Thanks

[Arne]

The bolt pattern is 4-4.5" also known as 4-114.3. Your 17" wheels are not the proper offset, they won't fit on the Z, they will hit the strut. You will need pretty hefty spacers to make them fit, at least 25mm thick, probably more like 40mm, as the Z likes close to zero offset.

You didn't complete your profile, where do you live?

[Curtis240Z]

You will need 0 offset rims. If you use Honda bolt pattern (4x 100 mm) and offset (37- 40 mm) then you will need hub adaptors (http://www.modern-motorsports.com/catalog/product_info.php?products_id=6) . Adaptors are okay for street use but not recommended for and kind of performance driving. Plus with the positive offset you lose the "deep dish" look.

[cremmenga]

Ha I'm a new school kinda guy myself! I have asked many a people about this question. I am putting 17x7" chrome rims on my z and motorsport sells a strong billet adapter that will work. Tell them your rim is a 17x7 with a 40+ offset just like the Konig "hurry" wheels http://www.zcarparts.com/store/merchant.mvc?Screen=PROD&Product_Code=25-1058&Category_Code=WWC19

They will tell you what adapter they use for that rim and it should be the same for yours if that is the size you are going with. I called awhile back and I think he said the adapters were $58 apeice or close to that, so that is pretty damn cheap!!! The phone number is (800) 633-6331 , just explain to them what you are doing and they will get you set right up!!

[bpilati]

Stock offset for a 240Z is 15mm.

[monstar147]

Sweet. Thanks for the updates on the rims.

Crem: Did you have any fitting/rubbing problems with the the 17x7?-what tires are you planning to run?

these are the rims i want to run:

[240ZX]

Monstar147,

You should have no issues putting 17"x7" wheels on your Z. As mentioned, you will need to use spacers to position the tire/wheel correctly in the wheel well. Some simple measurements will provide you information for calculating the spacer thickness. I run (f)17"x8" and ®17"x9" and have no clearance issues and my Z sits pretty low! Some people say spacers are not good for race applications but, tell that to the racers who use them regularly!!? Done properly, spacers are just fine....just remember to torque the bolts properly and check them occasionally. When people tell you you need zero offset, that is the offset of the stock skinny steel rims. Both my front and rear wheels are 35mm (1.38")offset. My front spacers are approximately 27mm (1.063") and the rear are approximately 22mm (0.87").....certainly not a zero offset situation when you add the thickness of the spacers and wheel offset......front = 8mm (.315") offset, rear = 13mm (.512") offset. You have to remember you are trying to center a wider rim than stock.

[Fun_in_my_z]

I think they look cool. Why not try some flares?

[cremmenga]

240zx, you are running 8 & 9 inch wide rims?? is that on a 240z or 240zx. I would like to run wider tires that what a 7" rim would give if possible. Do you think i could go with say 18" x 8" it probably close to =40 offset rims?? on my 72' 240z???

[Victor Laury]

I run (f)17"x8" and ®17"x9" and have no clearance issues and my Z sits pretty low! Both my front and rear wheels are 35mm (1.38")offset. My front spacers are approximately 27mm (1.063") and the rear are approximately 22mm (0.87").....certainly not a zero offset situation when you add the thickness of the spacers and wheel offset......front = 8mm (.315") offset, rear = 13mm (.512") offset.

Tom, So you've said. But I've seen your car and can ALMOST believe it.

ok, by most accounts a 15X8 @0 will fit.... Just barely, at both the fender lip and spring perch. Ok, 8'' rim is 9'' total, 0 offset means 4.5'' on either side

Your rears are 9'' which is 10'' total at 0 would be 5'' on either side. You are spaced to +13, so take the 1/2'' from the out side and add it to the inside = 4.5'' frontspace and 5.5'' back space.

How is it possible that you are NOT rubbing springs?

[240ZX]

Tom, So you've said. But I've seen your car and can ALMOST believe it.

ok, by most accounts a 15X8 @0 will fit.... Just barely, at both the fender lip and spring perch. Ok, 8'' rim is 9'' total, 0 offset means 4.5'' on either side

Your rears are 9'' which is 10'' total at 0 would be 5'' on either side. You are spaced to +13, so take the 1/2'' from the out side and add it to the inside = 4.5'' frontspace and 5.5'' back space.

How is it possible that you are NOT rubbing springs?

There are a number of guys with similar set-ups that would agree with me. But hey, everybody is entitled to their own opinion. Just trying to help a fellow member out with some proven facts.:classic: Regarding your question about rubbing the springs....not an issue however, at the rear, the inside edge of the rim is approximately 1/8" away from the strut. At the ride height of my Z, I believe I'm at the limit of rim width and to avoid rear tire rub at the fender well lip I run a 235-40 tire and the lip has been rolled. So Victor, you can believe what you wish! If you doubt my input, then maybe you should take a trip to S.P. so I can confirm it to you!!! And if you decide to come by, don't forget to bring the beer....you know what kind I like!

[240ZX]

Victor, the reason a 17" or 18" rim will have more clearance between the struts is because the strut angles away from the wheel, so the larger the rim diameter the more clearance there is between the struts, for a given offset....simple geometry my friend.