New 6UL race wheels @ 949 Racing - LotusTalk - The Lotus Cars Community
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post #1 of 213 (permalink) Old 01-11-2011, 08:14 PM Thread Starter
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New 6UL race wheels @ 949 Racing

Hello all,

First off we should introduce ourselves. We are the maker of the 15" 6UL and 17" 6ULR wheels that some of you may have seen at the track or autocrosses on Miatas, Civics, MR-S, S2000, WRX. etc. Click the logo below to visit our site.

We are beginning development for all new Lotus specific race fitments scheduled to be released towards the end of this year. These would be brand new purpose built wheels, not a revision of a current wheel. Style exactly like current 6UL seen below. We would like to get your feedback for these fitments. Send us an email through the 949 Racing website if you have any questions or suggestions.

Every fitment we do starts with optimum competition specific tire sizes that'll fit in the car. We then design the optimum wheel around those tires. So job one is to makes sense of the various tire options for the various Lotuses. Let us know what tires you run and would like to run, assuming an appropriate wheel existed.

Most HPDE, W2W and HPDE/Time attack drivers are running either 15/16 or 16/17 combos. Guys like Zust notwithstanding . Running either combo it seems there are limited choices in high performance and R compound tires. Assuming shorter and wider while keeping the same 105% diameter ratio and ~30 width stagger.

That's led me to think that a 15/17 combination might be open up some tires options. Some size combos that might be possible:
For reference OEM diameters:
23.6" front
24.9" rear rear is 105.5% of front rollout (24.9/23.6%)

Kumho XS

205/50/15 23.1"
245/40/17 24.7"

NT01
205/50/15 22.95"
225/45/15 22.95"

235/40/17 24.4"
255/40/17 24.9" (OEM height)

Hoosier A6/R6
205/50/15 22.8"
225/45/15 22.9"

225/40/17 23.8"
245/40/17 24.5"

If those sizes don't work we stick with the current 15/16 or 16/17 combos.

Before some of you mention R888 sizes, I hate those tires and am sorry many of you are forced to run them. A048's are great but damned expensive considering they're only stock width. That leaves RA1's (Old Faithful) but I wonder just how long they'll be available. Probably until Toyo fixes the problems with the R888 then the 12 year old RA1 will disappear for good.

Reference pic of a 15x9 fitment we currently offer for other cars. This happens to fit the rear of the 111R's but we don't have a matching front. Concentrating on a 17x8 and 17x9" rear. Undecided on front diameter at this point.

Cheers,

Emilio

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post #2 of 213 (permalink) Old 01-11-2011, 08:23 PM
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Emilio, It's great that you're bringing the 6UL to the Elige. The 6UL is a very nice wheel. Sanely priced light + strong wheels for the Elige are pretty scarce.
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post #3 of 213 (permalink) Old 01-11-2011, 08:28 PM
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oh man, i wanted these before getting my team dynamics. you really need a 16" in there.

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post #4 of 213 (permalink) Old 01-11-2011, 08:29 PM
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Weights of the wheels? And if you hate the R888, why do you like the NT01? They are pretty much identical compounds and have similar characteristics AFAIK. Only difference is that NT01's are asymmetrical and more twitchy in wet conditions? Or am I missing something

2005 Magnetic Blue Lotus Exige
Drivetrain: Honda K20A Type R | Innovative Kit | Arqray Ti | SCM Intake/Header | Hondata | proRAD | Setrab | KTuned | V2 Fuel Tank | BOE Swirl
Aero: Exige Clams | Reverie | TWRD GT | Craftsquare | IMRP | BSK | Voltex
Suspension: Penske SA | V2arms | RTDbrace | CE28N | R888 | BOE Floating | Pagid RS14
Interior: Recaro SPG | Willans | WorksBell | Sparco
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post #5 of 213 (permalink) Old 01-11-2011, 08:35 PM Thread Starter
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Quote:
Originally Posted by 6i9 View Post
Weights of the wheels? And if you hate the R888, why do you like the NT01? They are pretty much identical compounds and have similar characteristics AFAIK. Perhaps the NT01's are asymmetrical rather than unidirectional like the R888 and can be swapped side to side?
Perhaps similar compound but totally different casing and tread pattern. The only people who love them have either never run any other modern tire, get them for free or have to rum them in whatever race series.

So the thread doesn't degrade into a R888 vs the world debate, I'll just say that I will not design wheels around them regardless of what testimonials some may be urged to post here.

Regarding weight, that is not important at this juncture in the sense that we're not 100% sure what size and offset to make yet. They'll be as light as I can make them. Our current 15x8 and 15x9 are the lightest monoblock wheels in the world in those offsets ranges. Each wheel is individually weighed and ships with a handwritten weight sticker to shows it's under the advertised weight. We know a thing or two about making affordable, durable and light wheels. As we aren't selling anything now anyway, no one is making purchasing decision or planning around them. When the time comes, we'll post estimates for the prototypes. When they arrive, we'll publish final absolute weights.
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post #6 of 213 (permalink) Old 01-11-2011, 08:38 PM
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Gotcha. Looking forward to your front wheel solution.

2005 Magnetic Blue Lotus Exige
Drivetrain: Honda K20A Type R | Innovative Kit | Arqray Ti | SCM Intake/Header | Hondata | proRAD | Setrab | KTuned | V2 Fuel Tank | BOE Swirl
Aero: Exige Clams | Reverie | TWRD GT | Craftsquare | IMRP | BSK | Voltex
Suspension: Penske SA | V2arms | RTDbrace | CE28N | R888 | BOE Floating | Pagid RS14
Interior: Recaro SPG | Willans | WorksBell | Sparco
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post #7 of 213 (permalink) Old 01-11-2011, 08:44 PM
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Love the nickel finish. I prefer 16" wheels in the front.

Brunton Stalker, LS3 powered
5/8th Scale Lotus 7, Series 2
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post #8 of 213 (permalink) Old 01-11-2011, 08:47 PM
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saw this wheel on the mazda 2 racecar at the LA show and took pictures. Really like this design.

Do you guys have a 17x8.5?
What's the weight of the 16x7 and 17x9? offsets?

** save ~10 lbs gain 1 hp ** EQ: Y=(190*X) / (1984-X) where Y is (HP) and X is (lbs)

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post #9 of 213 (permalink) Old 01-11-2011, 08:53 PM
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Do your 15" 6UL wheels fit on the front of the eliges without the upgraded 4 pot calipers? If not, any way you can make the 15" fronts fit? I've been trying to get a set of 15/16" 6UL wheels to fit on my elise for some time. Personally, I'd go with a 15x7 fronts, 16x8 rears. I even thought of going 15x7f, 15x8r but tire choice are very limited for the 15" rears.
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post #10 of 213 (permalink) Old 01-11-2011, 08:55 PM Thread Starter
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Quote:
Originally Posted by MightyMike View Post
.. I prefer 16" wheels in the front.
Why exactly?

Quote:
Originally Posted by shay2nak View Post
saw this wheel on the mazda 2 racecar at the LA show and took pictures. Really like this design.

Do you guys have a 17x8.5?
What's the weight of the 16x7 and 17x9? offsets?
Specs on all the wheels we offer are on our website.

Regarding weights on proposed, please read my reply three posts up.
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post #11 of 213 (permalink) Old 01-11-2011, 08:59 PM Thread Starter
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Quote:
Originally Posted by vstryker View Post
Do your 15" 6UL wheels fit on the front of the eliges without the upgraded 4 pot calipers? If not, any way you can make the 15" fronts fit? I've been trying to get a set of 15/16" 6UL wheels to fit on my elise for some time. Personally, I'd go with a 15x7 fronts, 16x8 rears. I even thought of going 15x7f, 15x8r but tire choice are very limited for the 15" rears.
None of our current wheels clear Exige front brakes as is. I think the 15x7.5 with a 15mm spacer or lug adapter would work but haven't tried it yet. I know a few customers have run our 15x8 and 15x9 in front with spacers.

Existing 15x8 & 9" rears should fit perfectly. 225/50/15 is perfect I should think. Shorter, wider and readily available.

ZJChaser is going to bring a stock Elise by soon to do some fit testing and measuring. If there is someone else near us in Lake Forest, CA, drop me a line.
Go to the website for directions.
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post #12 of 213 (permalink) Old 01-11-2011, 09:36 PM
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Quote:
Originally Posted by 949Racing View Post
Why exactly?
Aesthetics - IMO, smaller wheels up front will throw off the visual balance of the car. I no longer track my Elise, so trackday mumbo jumbo is irrelevant. My Birkin is my trackday toy.

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post #13 of 213 (permalink) Old 01-11-2011, 09:47 PM
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The Exige went to a larger front rotor, so 15 become an issue there. Use full thread Toyo RA1 for my street tires in 15/16 with a 205/50/15 in front. With the smaller front diameters scrape more then with the LSS package and have to be much more careful. Best overall demand would be for the 16/17 combo.
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post #14 of 213 (permalink) Old 01-11-2011, 09:55 PM Thread Starter
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Quote:
Originally Posted by LarryB View Post
The Exige went to a larger front rotor, so 15 become an issue there. Use full thread Toyo RA1 for my street tires in 15/16 with a 205/50/15 in front. With the smaller front diameters scrape more then with the LSS package and have to be much more careful. Best overall demand would be for the 16/17 combo.
Depends on the caliper. We fit 298mm rotors into the current 15" 6UL with a Wilwood Dynapro 6 piston caliper. The wheels were designed with BBK clearance from the outset. A Lotus specific version would be the same. Need to get on to my shop so I can make a template for my engineer.
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post #15 of 213 (permalink) Old 01-11-2011, 10:35 PM
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looking forward to this

rightseatdriver.
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post #16 of 213 (permalink) Old 01-11-2011, 10:56 PM
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Depending on wheel weights and sizes, I'd be very interested. As someone with an Exige with the AP Racing/Cup front brakes, a 15" wheel would be out for me. I'd want the 16/17 combo.
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post #17 of 213 (permalink) Old 01-12-2011, 04:57 AM
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I want the 16/17 combo

I don't like Mercedes!
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post #18 of 213 (permalink) Old 01-12-2011, 01:09 PM
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16, 17, but if the price is more than $1500 my opinion won't be relevant.
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post #19 of 213 (permalink) Old 01-12-2011, 01:18 PM
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If things are good I'm in for a few sets. 16/17

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post #20 of 213 (permalink) Old 01-12-2011, 01:27 PM Thread Starter
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Quote:
Originally Posted by MotoGeek View Post
16, 17, but if the price is more than $1500 my opinion won't be relevant.
Much too early to quote exact prices but we're aiming for something in the $900-1200/set range. Once we know exactly what were are building, we can start talking about weight and price. For $1500 I could just about do a forged wheel set. Our Lotus fitment will be low pressure cast and T6 heat treated. possibly with roll formed outer rims.

For reference, our current 15x9 weighs 12.7 lbs. Frankly, it shocks me just how much Lotus drivers pay for either wheels that are appallingly heavy or ah, not inexpensive shall we say.
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