Rota RB/RB-R, 4x114.3, 17", Z-Offset Wheels

[New-to-240z]

I'm really close to just purchasing these. I'm hoping he still has some 17x9's in silver waiting for me in a week or two. . .

[IMDSLY1]

This is my follow up post, as I had posted my discontent with contact and professionalism on the part of Kim @ Rota. I have received my wheels, and am more than impressed with the product, and its packaging. I have spent more than 4.5 times the amount on 22" rims and have never received them with the fronts shrunk wrapped and a fabric hairnet stretched over for added lip protection, simply...appreciated.
As for the lack of communication, to some degree, my fault as 2 of my emails asking for confirmation were sent to the address that I sent paypal payment (cherrycure@whatever) He obviously doesn't use it??
That leaves an email and a phone message unresponded to?
Not acceptable as per my standards of doing business. period.
Is the product worth the money, absolutely.
If there was another source, and they were $850, and answered emails promptly, answered emailed inquiries after 4 days completely, I would give them my money over Kim....hands down.
Maybe just me...price isn't everything.
My last email described my failed attempts at hearing from him, made comments to the point of answering emails promptly would result in reduced email amounts, and my response after 9 days was that of.....

Here is your tracking number

So, your money your choice.
My opinion is that of; product thumbs up, service thumbs down

---> Edited because I am an idiot

Oh and Sparks, you are right there is a 4 day lag when sending emails to Canada, so don't use my experience as relevant feedback Nice ride for an American

[thehelix112]

The wheel width is not measured to the outermost edge of the wheel, AFAIK, but rather to the point the tyre is mounting, as indicated here:

http://www.tirerack.com/wheels/tech/....jsp?techid=95

I believe the generally accepted difference is ~1 inch, so:

Fact....a 17x9 with 4.5" bs would be an offset of 0, not -13

Is not so much a fact as seemingly incorrect.

17x9 measured = 17x10 physical width. Meaning 5" is centreline, -4.5" back spacing = 12.5 (13)mm offset.

Dave

[ShaggyZ]

Originally Posted by thehelix112

The wheel width is not measured to the outermost edge of the wheel, AFAIK, but rather to the point the tyre is mounting, as indicated here:

http://www.tirerack.com/wheels/tech/....jsp?techid=95

I believe the generally accepted difference is ~1 inch, so:


Is not so much a fact as seemingly incorrect.

17x9 measured = 17x10 physical width. Meaning 5" is centreline, -4.5" back spacing = 12.5 (13)mm offset.

Dave

Right on. Here's a chart to help out.



IMDSLY1's one post wonder demonstrated a fundamental misunderstanding of wheel measurements.

Originally Posted by IMDSLY1

This is my follow up post, as I had posted my discontent with contact and professionalism on the part of Kim @ Rota. I have received my wheels, and am more than impressed with the product, and its packaging. I have spent more than 4.5 times the amount on 22" rims and have never received them with the fronts shrunk wrapped and a fabric hairnet stretched over for added lip protection, simply...appreciated.
As for the lack of communication, to some degree, my fault as 2 of my emails asking for confirmation were sent to the address that I sent paypal payment (cherrycure@whatever) He obviously doesn't use it??
That leaves an email and a phone message unresponded to?
Not acceptable as per my standards of doing business. period.
Is the product worth the money, absolutely.
If there was another source, and they were $850, and answered emails promptly, answered emailed inquiries after 4 days completely, I would give them my money over Kim....hands down.
Maybe just me...price isn't everything.
My last email described my failed attempts at hearing from him, made comments to the point of answering emails promptly would result in reduced email amounts, and my response after 9 days was that of.....

Here is your tracking number

So, your money your choice.
My opinion is that of; product thumbs up, service thumbs down



Wrong....the rims are 4" of back spacing both front and back. You are correct in stating that they are the same backspacing. I have to clarify for a few people that do not understand backspacing, or offsets on rims. I have heard everything from; "all that matters is that the rim has 4.5" of bs and it will fit" NOT TRUE would a 17x11 with 4.5" bs fit? NO
would a 16x7.5 with 4.5" bs fit? sure, but they will be pushed an inch inside the fender lips.
Fact....a 17x9 with 4.5" bs would be an offset of 0, not -13
offset is the measurement of difference off of dead centre, meaning that a + offset advances the mounting face towards the outside of the rim. higher positive (+) offset equals less lip and sending more rim inward on the vehicle. negative (-) offset increases lip and sends the rim outwards on the car.
There are good websites that will help you determine correct offsets for preferred fitment. It helps when you have decided that a 16x8 with 0 offset fits how you like at the fenders and you are entertaining a set of 17x9's that the offset would change to +13 to maintain the same placement at fenders and push the extra inch inward(provided you have the clearance) Pictures showing how this changes placement helps!!

Oh and Sparks, you are right there is a 4 day lag when sending emails to Canada, so don't use my experience as relevant feedback Nice ride for an American

[IMDSLY1]

Originally Posted by thehelix112

The wheel width is not measured to the outermost edge of the wheel, AFAIK, but rather to the point the tyre is mounting, as indicated here:

http://www.tirerack.com/wheels/tech/....jsp?techid=95

I believe the generally accepted difference is ~1 inch, so:


Is not so much a fact as seemingly incorrect.

17x9 measured = 17x10 physical width. Meaning 5" is centreline, -4.5" back spacing = 12.5 (13)mm offset.

Dave

Your statements are correct, sorry, I am an idiot

The rim also has 9.5" of backspacing if placed on top of beer cans and measured to the floor

[Nelsonian]

So, I'm reading all of this and getting most of it, but still scratching my head as I don't know exactly what size option would fit my subtle z kit. As I stated, the subtle z offers 1.5" flare more than stock, and if I can recall correctly, the zg is 2.5" over stock. I have ground control/10" Hypercoils and am hoping for the widest rim to fit without having to really stretch a tire. I guess if worst comes to worst maybe I could (convince/compensate for time, energy) a local hybridz member to let me fit a 17"x9-13, and 17X8.5+4 to see in person.

[Gollum]

From my first hand experience fitting these rims, even the ZG are a tight fit unless you do it perfectly. Ideally you'll be lowering the car an inch, allowing you to raise the flare up a bit, pushing it outward giving it more clearance.

If you mount the ZG flare too low, then you're still gonna rub. Nothing an almighty hammer can't fix though.

With the 9" in the back everything changes though. 9" is much easier to fit, and although wouldn't fit under the stock wheel well, it might fit with just some serious hammering.

I'd assuming with the subtle Z flares most of your fitment work will be in the front.

[rudypoochris]

I wrote this calculator for finding front and back spacing...

http://www.autolounge.net/calculators/tirespacing.html

Here is the approx BS and FS for the 3 wheels:

8.5" +04 /---/ 4.90"BS /---/ 4.59"FS
9.0" -13 /---/ 4.48"BS /---/ 5.51"FS
9.5" -19 /---/ 4.50"BS /---/ 5.99"FS

So as you can see, the 8.5" sticks out about 1.4" less than a 9.5" and the 9" a little under 1" more than the 8.5". Hope that helps.

[brianZortiz]

hi, if i should buy some new Rbr for $630 17x8.5 all corners with +4 offset. any 1 using 8.5 in all corners?? Thanks

[Drax240z]

Originally Posted by brianZortiz

hi, if i should buy some new Rbr for $630 17x8.5 all corners with +4 offset. any 1 using 8.5 in all corners?? Thanks

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