18x10 ET40 fitment upfront

[Julianwithanx]

Thinking about running 275/40/18 squared with Apex EC7 18x10 et40 all around. Car has ford track suspension and bmr linear springs upfront which are supposed to be a 7/8 drop. Dont want to run a spacer if possible but not sure if wheel will rub.

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[Bluemustang]

I think you'll be alright.

 

[mustanghammer]

I think you will need a 2-3MM spacer because the issue is clearance between the strut and the wheel. Below is my car with 18x10 wheels with 42mm offset, Steeda Comp springs and the same size tire. To get them to fit I had to use a 5mm spacer for a net of a 37mm offset. It gave me about 2mm clearance on the strut. No issues with fender clearance and that size tire.

 

[Julianwithanx]

I think you will need a 2-3MM spacer because the issue is clearance between the strut and the wheel. Below is my car with 18x10 wheels with 42mm offset, Steeda Comp springs and the same size tire. To get them to fit I had to use a 5mm spacer for a net of a 37mm offset. It gave me about 2mm clearance on the strut. No issues with fender clearance and that size tire.

Thanks ill order a set of 3mm spacers

 

[GTP]

I would test fit before ordering spacers. Then you will know what's needed to clear strut AND be flush at the fender.

You could locally buy a stack of 9/16 washers to simulate a spacer if you start off rubbing the strut.

 

[mustanghammer]

I would test fit before ordering spacers. Then you will know what's needed to clear strut AND be flush at the fender.

You could locally buy a stack of 9/16 washers to simulate a spacer if you start off rubbing the strut.

I would agree would this approach. There are variables in the way wheels are constructed and the struts on your car that may impact your application. So test fit, measure and then order spacers. I would also recommend that you get hub-centric spacers. I found the ones I use on eBay.

My car has Koni Yellows that are probably the same as the OE struts. But I have noticed that some after market struts have slotted upper holes for camber adjustment. Increasing camber where the strut is bolted to the spindle will affect wheel-to-strut clearance.

Regarding spacers and lug threads. With the OE lug studs on my car, using a 5mm spacer didn't leave allot of threads for the nuts to engage. This could be a function of the wheels I was using but it made me a little nervous. I eventually installed long ARP studs for piece of mind.

 

[GTP]

I would agree would this approach. There are variables in the way wheels are constructed and the struts on your car that may impact your application. So test fit, measure and then order spacers. I would also recommend that you get hub-centric spacers. I found the ones I use on eBay.

My car has Koni Yellows that are probably the same as the OE struts. But I have noticed that some after market struts have slotted upper holes for camber adjustment. Increasing camber where the strut is bolted to the spindle will affect wheel-to-strut clearance.

Regarding spacers and lug threads. With the OE lug studs on my car, using a 5mm spacer didn't leave allot of threads for the nuts to engage. This could be a function of the wheels I was using but it made me a little nervous. I eventually installed long ARP studs for piece of mind.

Yeah pretty much all track cars have long studs and open ended lugs.

There is a risk of shifting with slotting the strut. A different risk using camber bolts.

Camber plates will get you to 2.8*. This works fine IMO with PS4s. Any tire wider or softer will need more camber. And long slotted camber plates, opened strut top hole, etc. It's an ordeal.

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