Gregerst

iTrader: (1)

I asked two popular vendors of XXR wheels specifically whether the Xxr 530 +20 has more concavity than the +35 and I got two different answers.

Vendor 1.
No, there isn't. The lower offset just has a deeper lug pocket and a thicker mounting hub.

Vendor 2.
Yes, the +20 have a deeper concave. Regards

BreezyTL

iTrader: (8)

from what ive read about the xxr530 on the forums here is that the +20 has more concavity.

correct me if im wrong tho...

MEKO

iTrader: (1)

^Same here

"ebelp" might have a positive answer to this

The Machine

iTrader: (8)

While offset MAY have a tiny tiny effect on concavity, it is the width of the wheel that is the main factor controlling how concave it will be. I can't see there being much difference in concavity between the +35 8.75" and +20 8.75" 530 rim.

Gregerst

iTrader: (1)

In some cases the lower offset of the same width wheel has more concavity. Supposedly the xxr 527's were this way and I think the assumption was made that the 530's were the same but I haven't seen anything really backing this up. I'd like to go with the +33 offset if it has the same concavity that way I could run a normal 235 or wider tire and still look decently flush. Besides having to run a narrower tire the +20 has a little bit too much poke in the front for me. It does look nice when the car is slammed 3+ inches with camber but I'm shooting for the best all around combo of performance, daily drive ability and looks which I think is going to be about a 2" - 2.5" drop a 8.75" to 9.5" wide +30 (+-5) offset rim.

Gregerst

iTrader: (1)

Would somebody who has the 18x8.75 +20 wheel mind taking this measurement? I'd love to get to the bottom of this concavity question.

zachlone

pretty sure +20 have more concavity than +35 but will be less noticeable on an 8.75" wheel compared to the 9.5. does it really matter tho? u said that you want +35 to fit ur daily driven 2-2.5" TL so just get the +35s

Gregerst

iTrader: (1)

..and that's my +33 wheel in the picture. I still want to know though. Why. because I like to get to the bottom of things. Right now all we have are differing opinions.

One of the things that would have pushed me to buy different wheels would be if the +33 had a lot less concavity. But I'm of the opinion that they're the same.

zachlone

it wont have alot less concavity, they could be the same. who knows. somebody measure their +20 8.75 rims and help this guy out!

The Machine

iTrader: (8)

I'm more curious as to how you have a +33 XXR 530 rim? From what I've seen they only come in +35 or +20. I've never seen anyone sell these in +33.

Never mind, NLM has them as +33.

I just find it weird that they sell +33 but AVN and everyone else has them as +35.

zachlone

http://www.nlmotoring.com/XXR-530-Wh.../53088442n.htm

Gregerst

iTrader: (1)

I think at some point they switched the +35 to +33.

sockr1

iTrader: (5)

i'll measure my rims sometime this weekend and update here

zachlone

prolly so they will clear the brembos lol if enough ppl complain things get done

curassm

^+1, base on the pic, it's going to be very slightly diff. i might be wrong lol. i was gona place pre-order on xxr535, must know this as well.

RU_JELLY

iTrader: (1)

the +20 have more concavity i've seen them in person on a staggered setup. not a huge difference but there is a difference

GetLikeMe_TypeS

I jus ordered the xxr 530 wheels 8.75 with a +33 offset what size tires shud i go with or shud send em back and get +20 offset..Been reading for hrs and jus noticed this +33 offset

sockr1

iTrader: (5)

the +33 will not clear the brembos on your car. you need to run a spacer (check out the xxr 530 thread for the exact size, i think it's 6 mm or so). if i were you i would send them back and get the +20 with 225/40/18 tires

MEKO

iTrader: (1)

with+20 and 225 tires, you don't have to roll if you leave a gap there...
but if you do, you will have bad time, "ebelp" will kill you to lower the car
So roll it at first

GetLikeMe_TypeS

Yea he told me that today..i think ima go wit the staggered look 8.75 up front and 9.75 in the rear if i dont like ill jus sell the wheels..after all.. we ALL have done experimenting RIGHT? lol Wish Me Luck

Deerole

Yes their is a noticable diff. i have these wheels in +20, my buddy got them in +35 and the diff is notable different. +20 is more concave. ill try to get you some pics of my boys car

mikesku

iTrader: (6)

I've read there is less than a 1.5 cm of a difference in concavity, +20 being the more concave... But with all the amount of people running every spec of the 530's how are there no pics on this already haha

Saint91

could some one please post pictures? Looking at ordering 530's or 527's not sure which one yet

story.customz

I went staggered offsets for my set up.


18x8.75 +33 fronts
18x8.75 +20 rears


Front right is +33, front left is +20
Rear right is +20, rear left is +33


Kind of hard to tell, but the rear wheels show a better difference in concavity considering you can't see the drill pattern:

pohljm

barely perceptible. why dont you measure it? The primary reason you cant see the holes is its further away from camera!

story.customz

Isn't the difference in concavity just the difference between offets?


13mm?


And I meant you can't see the holes compared to the other rear wheel beside it. They are basically the same distance away from the camera.

pohljm

not always, but it looks like its about that much