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:
24.9" rear rear is 105.5% of front rollout (24.9/23.6%)
255/40/17 24.9" (OEM height)
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.