God Spec info 18x10 +40 (pictures, alignment specs, tire info)

[optronix]

You know, I didnt even think about bump stops because I trim only what is required (again, never an issue) and completely forgot other people/shops may not follow that same guidance. So good call @HondaHoon

So its a very good idea to check even though its going to be super tricky (or impossible) to check without finagling the dust covers off or enough to expose the bumpstops somehow if you arent taking out the struts.

Yeah... that's a part I'm a bit worried about. But it also kind of validates my want for coils. I think I'm gonna go that route regardless, I've been considering it for a while- and only went with springs because I wanted the adjustability. I frankly don't give a shit anymore and would prefer better spring rates and damping.

Due diligence is expected, and if it's not that much hassle to just roll the finders a bit I may consider it just as a stopgap because I don't think I'll be ready to pull the trigger on coils by Monday (maybe idk, I'll think about it if parts availability allows). But I mean, it makes the most sense right now so why not lean into it?

Sponsored

 

[iforgettopee]

can we get back to pictures now...

 

[optronix]

can we get back to pictures now...

Sure, I get that but figured I'd try to at least close the loop. Just suffice to say this is the first (documented) data point of rubbing with this spec. It may or may not be relevant to most folks in this thread, but it is worth mentioning- and I hereby throw down the gauntlet for someone to step up and slap a set of 275 RE-71RZ on an FL5 to prove/disprove if it fits w/no rub or not.

Copy/paste from the update I posted on integraforums bc I'm lazy:

So verdict is in- the tires are just wide lol. The RE-71RZ appear to be on the wider spectrum even for 200TW, and likely run wider than their predecessor RE-71RS (*but note no measurements were taken so take this assessment with the appropriate grain of salt). So it is just a clearance issue. The bump stops appear to be cut correctly for the Eibach springs (which they fuckin should be, despite my existing reservations the shop that did them did have an established known good reputation).

That said the rubbing is extremely minor, and only occurs on very substantial bumps. Not anything I'm likely to come across during an autocross, but possibly a DE in certain conditions. It's just barely coming into contact with the felt/plastic liner so no damage is being done, just some extremely minor scuffing on the sidewalls, visible in the picture I shared above. Rears definitely more than fronts due to the extra camber. No other contact is taking place... and truth be told it appears to have actually mostly resolved already via "self-correction" from the tire wearing through the mm or so of liner. I noticed 3 "incidents" of rubbing on the ~1 hour highway drive to the shop this morning (so like <.01% of overall driving) - and absolutely zero on the way back. (Also the shop may have done some pressing/shaving with the fender liner but if they did it was minimal effort). I do have yet to run through my favorite bump that caused all this- but even still now that I know it's not actively hurting anything I think I'll just slow down a hair more when going over it on these wheels.

So TL;DR, it's just a "is what it is" situation that I'll just have to live with. With some input from a couple pros to I can live with that. Just chalk this up to the first known case to experience rubbing with the "god spec" configuration on 275 200TW tires, on the DE5 platform (which may have slightly less clearance than the FL5).

Oh and here, an angle I didn't post earlier bc you asked for more pics. Just pretend it's a civic:

 

[nycxandy]

Sure, I get that but figured I'd try to at least close the loop. Just suffice to say this is the first (documented) data point of rubbing with this spec. It may or may not be relevant to most folks in this thread, but it is worth mentioning- and I hereby throw down the gauntlet for someone to step up and slap a set of 275 RE-71RZ on an FL5 to prove/disprove if it fits w/no rub or not.

Copy/paste from the update I posted on integraforums bc I'm lazy:



Oh and here, an angle I didn't post earlier bc you asked for more pics. Just pretend it's a civic:

Check out @phothrottle's latest video. It goes into 18x10 +40 rubbing on an ITS.

 

[optronix]

Check out @phothrottle's latest video. It goes into 18x10 +40 rubbing on an ITS.

There you have it. Timely vid. These are the RS, I think the RZ are even wider. I still want to hear testimonials from even FL5 owners that have tried this combo with the RZ.

That said, with my current camber it isn't bad. Just the worst of the worst bumps. I'm not taking a die-grinder to it, I'm guessing I'll get the same effect over time from the tires themselves.

In any case. I'm stuck with them, because they are FAST. Coming from the RT660+ there is an instantaneously noticeable difference.

 

[ralden93]

Most would say no. Without pulling the alignment pins, you should be at or under 2* of camber...which is within stock spec on an FL5.

Unless you're running a large/wide tire brand you shouldn't be rubbing. I ran a 275/35/18 Nitto 555 G2 on Sportline springs and didn't rub at all at 2* of camber all around.

@rondre3000 bro have you tried tracking the car with this set up? I have the same camber and looking for the widest tire/wheel combo I can fit for track use

 

[ralden93]

ZE40 18x10 +40
Michelin PSAS4 275/35/18
Swift Springs, Alignment Pins Pulled

1.7-2 degrees of camber all around. No rub, a little poke in the front but no rub on hard driving.

@VinhVuPham have you tracked the car with this set up?

 

[CafeApex]

Having finally ordered a set of God Spec ZE40s, what is the current consensus for best tire size for daily/street use?

Sponsored