Dumb Question Thread - No Flaming Allowed

[repoman89]

Is this enough spring perch to tire / wheel clearance? Seems to drive around fine on the street but would rather not find out the hard way that it’s too little on track. 2.5” spring conversion + 18x9.5et35 wheels with no spacers.

[IamFODI]

Obioban so the metal one that BMW put on the vehicles should be changed to plastic?

Isn't the metal one a structural brace, tied into both the unibody and the subframe?

[lvm3sm46]

IamFODI yes you are right

[zzyzx85]

Is this enough spring perch to tire / wheel clearance? Seems to drive around fine on the street but would rather not find out the hard way that it’s too little on track. 2.5” spring conversion + 18x9.5et35 wheels with no spacers.

Looks like plenty of clearance to me. I wish I had that much lol.

[repoman89]

Looks like plenty of clearance to me. I wish I had that much lol.

Thought so as well but I swear I’ve read on here others need to keep the spring perch above the tire to avoid contact with very similar suspension and wheel setups. Wonder what the difference is ..

[zzyzx85]

Thought so as well but I swear I’ve read on here others need to keep the spring perch above the tire to avoid contact with very similar suspension and wheel setups. Wonder what the difference is ..

maybe it's a matter of preference? Having the spring perch above the tire would give the most clearance but result in using short springs.

[IamFODI]

IamFODI yes you are right

So, different from what you guys were talking about, no?

Obioban’s point was that a skidplate shouldn’t be metal unless it’s attached to the frame/body and thick. The stock metal piece isn’t a skidplate, and it is attached to the body unlike the stock skidplate or the aftermarket options, so I don’t think that’s a good point of comparison.

Does that make sense?

[lvm3sm46]

So, different from what you guys were talking about, no?

Obioban’s point was that a skidplate shouldn’t be metal unless it’s attached to the frame/body and thick. The stock metal piece isn’t a skidplate, and it is attached to the body unlike the stock skidplate or the aftermarket options, so I don’t think that’s a good point of comparison.

Does that make sense?

Yes thanks for clarifying

[Obioban]

Yeah, the thrust plate is a chonker-- if it moves from an impact, you have bigger issues.

[Obioban]

Is this enough spring perch to tire / wheel clearance? Seems to drive around fine on the street but would rather not find out the hard way that it’s too little on track. 2.5” spring conversion + 18x9.5et35 wheels with no spacers.

So long as you can fit a piece of paper between them, you're good to go.

[DoubleSidedTape]

So long as you can fit a piece of paper between them, you're good to go.

I’d probably want a bit more clearance than that, your tire is gonna deform by at least a few mm in cornering. But the pic looks fine.

[Obioban]

I’d probably want a bit more clearance than that, your tire is gonna deform by at least a few mm in cornering. But the pic looks fine.

Eh, not much deformation happening up by the shock.

[S3diment]

Is it worth installing this aftermarket header?

[Tbonem3]

Yes because it's super cheap and will make more power than stock catted headers

No because it's cheap junk and will barely make more power for the amount of effort (possible headache from fitment issues) or $ spent on installing. Should wait till you get euros or supersprint imo.

[PSUEng]

Does anyone have a comprehensive list of hardware needed when doing a full Supersprint exhaust system? I've made a parts list, and plan to also do the oxygen sensors and EGT at the same time (original to the car, 81k miles). I've seen the header kits, and I've pieced together what I think is an adequate list using RealOEM--just want to make sure the stock hardware works on the SS system, and not replace hardware that can be re-used. For example, I'm not sure that the manifold studs all need to be replaced--seems some guys re-use them with the SS headers. Also, some say to buy new torx bolts, others re-use due to price.

Thanks!