Q45 Rim offset ?

[1qckser]

My question is what is the difference between the stock offsetof a 91 Q versus a rim with a +23 offset, Thanks.

[Q45tech]

22mm roughly an inch so the track width will change by almost 2" as the tires move inwardThe suspension is designed for the tire center to be x with a 45mm offset for a 6.5" wide wheel

Narrow track will be detrimential to handling since the weight shift is a function of the CG divided by the track width [approximately 2% more weight shift or 86 pounds] which will affect steering and bearing forces.

Besides the tires will rub on the third link!http://www.tirerack.com/wheels/tech/off ... Offset.htm

Hard to find 45 mm in junk aftermarket wheels and some say it is possible to go down to 40mm but nothing narrower!!!!!!!!!!!!!!!!!! with a 7" wide wheel

[1qckser]

Thanks dennis, the reason I asked is because today a guy in a 300z pulled along side the Q and rolled down his window to say nice color, his Z was the same color as my Q, any way to my surprise he had on a set of 17x9 mustang Cobra 5 stars and said they fit perfect so the wheels started turning and I figured maybe we couls use theme on the Q, looks like the bolt pattern is the same, Thanks again

[1qckser]

Here is a cool page, http://home.satx.rr.com/jasonr/wheels.htmlhas info on running Mustang rims on Maximas

[911/Q45]

Isn't the offset to the outside, so a wouldn't a reduced offset make the track wider and give more clearance to the third link?

[Q45tech]

You can have both positive or negative offset depends on the car design. If you clear the inner suspension then you may hit the fender lip.......why many cars have flared fenders.

[1qckser]

I think I found a guy in my area who has a set of Cobra rims, if so then I will bolt them up just to satisfy my curiosity , I will let you guys know what happens, like I said they sure did look sweet on the Z.

[lonallenq45]

22mm roughly an inch so the track width will change by almost 2" as the tires move inwardThe suspension is designed for the tire center to be x with a 45mm offset for a 6.5" wide wheel

...

Hard to find 45 mm in junk aftermarket wheels and some say it is possible to go down to 40mm but nothing narrower!!!!!!!!!!!!!!!!!! with a 7" wide wheel

I have to disagree. A smaller positive offset (+) than stock (+45mm) would push the outside of the tire/wheel combination further out towards the fender lip increasing the track width. I have +35mm offset 7" width wheels and stock tires (215/65-15) on my 92 Q and the track width is roughly 1 cm wider on each side. I think the slightly wider stance looks better than stock. No rubbing at all with stock suspension. A larger positive offset would push the mounting surface of the wheel further out towards the fender lip away from the centerline of the wheel decreasing the width of the track.

[AZhitman]

A larger positive offset would push the mounting surface of the wheel further out towards the fender lip away from the centerline of the wheel decreasing the width of the track.

Wouldn't pushing the wheels outboard INCREASE the track width (defined as distance between the outer edge of the tires)?

[sultan]

increasing the offset puts wheels farther in, decreasing the offset would make it farther out. it's like those 13 inch rims hispanic people put on their cars. the tire is practically outside the fender well entirely, due to massive negative offset.

[AZhitman]

Those are worse than any rice-mod in my opinion. What an unsafe and goofy style.

[1qckser]

http://cgi.ebay.com/ebaymotors...9899, Here is a pic of the wheels I found, the set im looking at will be $400 and they are local.

[lonallenq45]

Wouldn't pushing the wheels outboard INCREASE the track width (defined as distance between the outer edge of the tires)?

I didn't quite say that in a way I had anticipated. A wheel with a larger positive offset than stock on the same width wheel will have the mounting surface of the wheel closer to the outside rim of the wheel. This moves the width of the wheel closer to the inside of the fender well decreasing the track width.

Code: Select all

Ex:  0 offset

            |   +   |                                 |   +   |            |   +   |                                 |   +   |            |   +   |                                 |   +   |            |   +   |                                 |   +   |            |   +   |                                 |   +   |

some positive offset

             |  +    |                               |    +  |             |  +    |                               |    +  |             |  +    |                               |    +  |             |  +    |                               |    +  |             |  +    |                               |    +  |

some negative offset

           |    +  |                                   |  +    |           |    +  |                                   |  +    |           |    +  |                                   |  +    |           |    +  |                                   |  +    |           |    +  |                                   |  +    |

Notice that the plus signs are all lined up? This would represent the mounting surface of the wheel (where the wheel mounts to the hubs).