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Sorry, got a wheel size question. Couldn't find answer searching. 18x8 45mm??? by huracan2015
Started on: 12-03-2014 02:26 AM
Replies: 8 (235 views)
Last post by: Joseph Upson on 12-06-2014 06:25 AM
huracan2015
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Report this Post12-03-2014 02:26 AM Click Here to See the Profile for huracan2015Send a Private Message to huracan2015Edit/Delete MessageReply w/QuoteDirect Link to This Post
I finally found wheels I want (Enkei M52) but they only come in 18x8 5x100 45mm. From what I've heard, 35mm is the best. So... If I throw on some 10mm spacers, am I all set? Or is it more complicated than that. This is my first time buying rims and tires... So yeah. Bear with me, thanks. 1987 GT stock suspension

Next, tire size. I've heard everything from 215-255 or 40-45 on the 18x8. I don't want to have a bulge in the tire, and I think I like the stretched look. But I'd like something that's just perfect since it would be winter tires.
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Report this Post12-03-2014 03:01 AM Click Here to See the Profile for 1986 Fiero GTClick Here to Email 1986 Fiero GTSend a Private Message to 1986 Fiero GTEdit/Delete MessageReply w/QuoteDirect Link to This Post
Just need to do some math and some measuring. Does Enkie have some kind of fitment 'chart'? It would basically be a sideways cutaway providing important measurements and give you an idea of what the wheel can accommodate. So, the flange is offset 45mm or ~1.77" from the wheel centerline. With an 8" wheel, that gives you ~5.77" of wheel from the hub flange in. Bolt something straight the the hub flange and you can use this measurement to make sure you've got the necessary clearance. Ultimately it depends on tires how much further you extend in toward the center of the car from the furthermost point of the wheel. You may need coil-overs if you haven't already installed them. Don't forget that spacers; even relatively thin ones of 10mm will heighten stress to the wheel bearings/hubs. You may find that they wear more quickly with spacers.
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Report this Post12-03-2014 10:23 AM Click Here to See the Profile for KaijuSensoSend a Private Message to KaijuSensoEdit/Delete MessageReply w/QuoteDirect Link to This Post
Google, Fiero wheel offset diagram. Very helpful when picking wheels
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Gall757
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Report this Post12-03-2014 02:07 PM Click Here to See the Profile for Gall757Send a Private Message to Gall757Edit/Delete MessageReply w/QuoteDirect Link to This Post
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huracan2015
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Report this Post12-03-2014 10:50 PM Click Here to See the Profile for huracan2015Send a Private Message to huracan2015Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Gall757:

http://www.fiero.nl/forum/Forum1/HTML/058236.html


So, if I'm reading that correctly, I will be fine as long as it doesn't go over the red line?
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Gall757
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Report this Post12-03-2014 11:29 PM Click Here to See the Profile for Gall757Send a Private Message to Gall757Edit/Delete MessageReply w/QuoteDirect Link to This Post
The red line is inboard limit....some suspension part gets in the way. You also need to worry about the 2 black lines on the other side...which is the fender (wheelwell).

[This message has been edited by Gall757 (edited 12-03-2014).]

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Joseph Upson
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Report this Post12-04-2014 07:48 AM Click Here to See the Profile for Joseph UpsonClick Here to Email Joseph UpsonSend a Private Message to Joseph UpsonEdit/Delete MessageReply w/QuoteDirect Link to This Post
A 10 mm spacer will likely require a hub stud change (to longer) so that the nut engages enough thread to keep the wheel on the car in the event you load the assembly enough in say a very tight corner that generates a strong leverage effect on the wheel. If you have bad roads put enough tire on the wheel to reduce the chance that it will be damaged in the event you hit a good size pot hole or step in the road.

In my experience with 18s, consider 225/45-50, or 235/45/50 rear only. I plan on switching to 215/ 50 on the front if I can find them because roads that hold puddles have caused some scary moments with the 225s on the front of the tale heavy Fiero when hit at speed. I have 245/40 on the rear.

[This message has been edited by Joseph Upson (edited 12-04-2014).]

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huracan2015
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Report this Post12-05-2014 04:35 PM Click Here to See the Profile for huracan2015Send a Private Message to huracan2015Edit/Delete MessageReply w/QuoteDirect Link to This Post
After several hours of research, I think I got all the info I need!

Planned wheel setup:

Front:
225/45/18
18x8
45mm
5x100
10mm spacers
72.6 to 57.1 plastic hub centric rings

Rear:
245/40/18
18x8.5
45mm
5x100
10mm spacers
72.6 to 57.1 plastic hub centric rings

[This message has been edited by huracan2015 (edited 12-05-2014).]

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Joseph Upson
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Report this Post12-06-2014 06:25 AM Click Here to See the Profile for Joseph UpsonClick Here to Email Joseph UpsonSend a Private Message to Joseph UpsonEdit/Delete MessageReply w/QuoteDirect Link to This Post
Consider 235/45 for the rear. I run 245s because my rear wheels are 18x9. Unless you have a modified engine and need the added traction keep rolling efficiency and wet weather performance in mind, also the limits of tire width as they relate to the wheel although a 245 shouldn't be a problem on the 18x8.
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