Tire rubbing on CS fenders with Moonbeam

jchammond

Doing some measuring across screen...much smaller diameter tire/but notice the radius of the backside of new fender vs the painted grey fender.
I know this is very hard to get exact from pic-but backside opening is at least .125" more.
wheels are definitely smaller...possibly a lower profile 18".
measurement's took across centerline,between door & wheel center on both,,,and then from rear fender edge & wheel center.
(pending steering wheel is in same position,,,more space/but not as much pictured because whel/tire is larger on grey car)

__________________
MazWorx built long block | FI-TT-100 Stage 2.75 | IPT built 7A/T

http://www.the370z.com/members-370z-...s-musings.html

jchammond

Hard to calculate with these pics....but tires are definitely closer to 24.75"dia. vs 26.75" on grey car...pending both are 19" wheels.

__________________
MazWorx built long block | FI-TT-100 Stage 2.75 | IPT built 7A/T

http://www.the370z.com/members-370z-...s-musings.html

AntiVenom

Based on the photo I'd say the car is running a 255-265 30 series tire.

As for offset my fronts are about the same specs but it's no wonder my rears are off if they went -26 on an 11. That retracts just over an inch from my 12" -25et. Which is about what I am estimating for a good fit.

I think the -20 fronts would work with a narrower tire especially with 2.5-3* No way the rears would work without something super extreme.



Sent from my Nexus 6P using Tapatalk

__________________

OptionZero

a cheaper, less invasive solution might just be to remove these tires and run something in the 255/30 range for clearance

while it may turn your stomach to run a "stretch", it'll be fine for DD

then get a second, cheaper set of wheels with better sizes for more rubber

something like 20x10 +0 in front and 20x11 -10 or something to fit 285 and 325 rears

jchammond

Stretch look seems to be the norm w/moonbeam.
Not exactly what you had in mind.


Sent from my iPhone using Tapatalk

__________________
MazWorx built long block | FI-TT-100 Stage 2.75 | IPT built 7A/T

http://www.the370z.com/members-370z-...s-musings.html

AntiVenom

Last I would also say their numbers are a bit exaggerated on the widening. Rear widens 40mm (+/- 1-2mm), measuring from the lip of the factory fender to the *outer* lip of the moonbeam flare. note the lip built in to the flare, which is about 10mm wide. obviously it can be trimmed, but to clear the inside without trimming you are talking maybe an extra 30mm or so of extra clearance.

__________________

OptionZero

Can u measure how much wider the fronts are

CarbonSignal

Offsets and size is in same range as on most of Zs. Emailed you to check with vendor what's the width of the wheel as have seen some sell wheel as 10" width bit after assembly it comes to 10.5 or 10.8. Second tire choice is very squarish.

Last you need to cut and trim fenders inside vent in front needs trimming and people going lower need to trim inside of flares as well. Let us know how it goes

Sent from my SM-G935F using Tapatalk

__________________

CarbonSignal

Offsets quoted are exactly as per Raptor Moonbeam gray Z with black Work CV series, work had limitation in offering offsets so we have small spacers on that Z. Wheels poke out when car is raised but that is close to zero offsets on drive height they are ok, as said you need to trim the fenders. As said I would have cross check width and offsets of wheels again

Sent from my SM-G935F using Tapatalk

__________________

jchammond

Well AntiV; looks like your wheels are wider than specs & you have square shaped tires....just about sums it up!
So my 10/12's are gonna be 11/13's on a stock body tucked w285/35,345/30's.
Most all wheel tire enthusiast probably have figured out by know,that a 10" wheel is actually closer to 11" lip to lip....and this isn't AV's first rodeo & i know he'll nail it down!!!
(hopefully my tires won't be square)

__________________
MazWorx built long block | FI-TT-100 Stage 2.75 | IPT built 7A/T

http://www.the370z.com/members-370z-...s-musings.html

CarbonSignal

As per our little experience Work wheels are half inch more because of welds if welded ones but have seen some to be same width as well, hardly noticeable though but tire choice as per wall can make a difference.

We feel try trimming the fenders and if possible try using other tires as well. The vert we did has 13" at back guy tried PS2 was rubbing changed to some other brand and it was ok then.

__________________

King

Sidewall looks super tall for r20...

AntiVenom

Thanks for all the input.

@carbonsignal. i would suggest in the future that you provide a range of offsets, or a recommended tire size to your customers. while my tire setup is a bit more square than that on other Moonbeam Z's I am not attempting to run anything outrageous. hell with the right offsets my tires would fit under a stock body Z. at any rate, i chalk it up to a miscommunication, as in general you guys were helpful throughout the process, but you might save folks some headache by taking the tire size in to account when making recommendations.

@erryone else. i went ahead and cut the inside of the fender as recommended by carbonsignal. easy peasy the tire doesn't rub. my offsets are still too aggressive. even bumping camber to 2.5* on the front leaves me with about 10mm of poke. the rears at 2* still poke about 25mm. so i have contacted strasse about the rebarelling. looks like they can land me very close to the specs i calculate to be a good fit. so now it's just a matter of $$$ and time.

lesson learned. if you go off the beaten path, make sure to bring your ruler.

__________________

OptionZero

Any thought to dismounting the tires and running a different size

Even going to a 275/30 and 315/25 (what i'm running) gets you a shorter tire and a bit more shoulder clearance.

You can still use your tires in the future, or sell them if financially feasible. I previously suggested a cheap set of track wheels.

This is not ideal, but might be cheaper than re-barrelling, which i know is a PITA and $$$

AntiVenom

I have definitely given it some thought since you mentioned it. The fronts could probably be fixed with a 265 or 275. Hell they could probably just be run at 3* camber with the 285 and clear.

As for the rear a tire change won't cut it. At 2* camber in the rear which is about the max you want to run from a performance standpoint, I have just under an inch of poke. At best we would be talking a 305 stretched over a 12" wheel and still might not clear.

I really can't see how any Moonbeam car not on some insane camber could fit a -25 12". I'd like to see pictures of what that fitment looks like to believe it. (@CarbonSignal you have any photos of what that looks like?)

And I guess if I am going to rebarrel the rears I might as well do the fronts and get the fitment I want.

Ultimately it just delays my S30 project about 6 months. This nonsense, combined with many weeknds of work, makes me think I just need a break from the garage and spend some time driving. So delaying that project isn't all bad.





Sent from my Nexus 6P using Tapatalk

__________________