New Forgestars, wrong offsets?

ckiesz · 04-21-2013, 06:05 PM

Not positive without knowing the offset, but I understand what you're saying. When the suspension is fully drooped (as it is on jack stands), it looses some of the negative camber that it has while it's at ride height, making the wheel look more aggressive than it is.
If it helps, my wheels stick out almost 2" when in the air. Once it's sitting on the ground, they tuck and sit flush.
You could always measure how much your oem wheel sticks out (or in), compared to the fender, while the car's in the air. Then take the same measurement with it on the ground, settled. Take the difference, or how much the top of the oem wheel retracted, and apply it to the new wheel's in-air position. This will give you a good idea of how much the new wheels will pull in with weight on them.

webstdave · 04-21-2013, 08:16 PM

ckiesz, first off, thank you very much for staying on topic and generally being helpful!

The method you outlined is a great suggestions and I will definitely give it a shot!

webstdave · 04-21-2013, 08:21 PM

cgust, I am with you, you would think that it would be clearly marked, I have turned the boxes and wheels upside and inside out looking for an indication of the offset to no avail (I did my best to measure the offsets and I came up with +12 for both front and back which as I am sure you know is very aggressive, especially in the front, but I don't necessarily trust simply using a straight edge and a tape measure). When I talked to the vendor, they said that Forgestar does not provide the offsets they use for particular vehicles so that no one will copy them (doesn't make any sense to me). Hopefully I will be able to get their foot to the fire and get some answers tomorrow.

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04-21-2013, 06:05 PM	#1 (permalink)
ckiesz Base Member Join Date: Nov 2012 Location: Sacramento Posts: 8 Drives: G35rc Rep Power: 14	Not positive without knowing the offset, but I understand what you're saying. When the suspension is fully drooped (as it is on jack stands), it looses some of the negative camber that it has while it's at ride height, making the wheel look more aggressive than it is. If it helps, my wheels stick out almost 2" when in the air. Once it's sitting on the ground, they tuck and sit flush. You could always measure how much your oem wheel sticks out (or in), compared to the fender, while the car's in the air. Then take the same measurement with it on the ground, settled. Take the difference, or how much the top of the oem wheel retracted, and apply it to the new wheel's in-air position. This will give you a good idea of how much the new wheels will pull in with weight on them.

04-21-2013, 08:16 PM	#2 (permalink)
webstdave Base Member Join Date: May 2012 Location: Virginia Posts: 14 Drives: 2009 370z Rep Power: 14	ckiesz, first off, thank you very much for staying on topic and generally being helpful! The method you outlined is a great suggestions and I will definitely give it a shot!

04-21-2013, 08:21 PM	#3 (permalink)
webstdave Base Member Join Date: May 2012 Location: Virginia Posts: 14 Drives: 2009 370z Rep Power: 14	cgust, I am with you, you would think that it would be clearly marked, I have turned the boxes and wheels upside and inside out looking for an indication of the offset to no avail (I did my best to measure the offsets and I came up with +12 for both front and back which as I am sure you know is very aggressive, especially in the front, but I don't necessarily trust simply using a straight edge and a tape measure). When I talked to the vendor, they said that Forgestar does not provide the offsets they use for particular vehicles so that no one will copy them (doesn't make any sense to me). Hopefully I will be able to get their foot to the fire and get some answers tomorrow.