More than anything this is just for fun and may be of interest to anyone doing similar:
So im still digging for wheels which are both lighter than the 2118s (not hard) and that i actually like the look of. I've tried really hard and still am to get a sensible price for a set of forged JDM wheels such as a Volk TE37/CE28N, SSR Type C or Regamaster EVOs. Alas theyre all stupidly rare, difficult to source used and either not made anymore or if they are theyre knocking on £2500/£3000 a set landed. Im mad but even i cant justify that money on a set of 15s lol
Pretty much ruled out Ultraleggeras too as im just not a fan of how they look. Cheap wheel and lightweight though.
And im down to 2 real options... i think. The Enkei RPF1 and the ATS DTC.
So I’ve done the following sums based on an example Nankang AR1 tyre which is likely to be the heaviest tyre I would ever fit. those that dont know, It’s a road legal cut slick much like an Toyo R888. And thrown in come prices too just to provide some contrast on why many opt for a 15" over a 16" wheel/tyre.
Wheels (Weights provided by manufacturer)
- ATS DTC 15x7 5.7kg £190 per rim, £760 a set
- Enkei RPF1 15x7 4.5kg £260 per rim , £1040 a set
- Enkei RPF1 16x7 4.5kg £286 per rim , £1144 a set
AR1 (Weights provided by manufacturer)
- 15” tyre 8.7kg Approx £100
- 16” tyre 9.2kg Approx £150
Wheel and tyre assembled as follows.
- 15” DTC 14.4kg
- 15” RPF1 13.2kg
- 16" DTC unavailable
- 16” RPF1 15.4kg
For contrast, a 2118 at 9.6kg with an 8.7kg tyre is 18.3kg.
So based on a set of 4
- 2118s a set of 4 = 73.2kg!!
- A set of 15” RPF1s = 52.8kg a 20.4kg weight loss
- A set of 15” DTCs = 57.6kg a 15.6kg weight loss
- A set of 16” RPF1s = 61.6kg a 11.6kg weight loss
So DTCs allow 15.6kg and RPF1s allow 20.4kg of rotating mass and unsprung weight to be dumped.
Knocked up a little table below with some other popular wheels just for fun.
Prices are approx at time of print, i dare say there are some deals to be had. All weights are manufacturer claimed.
DISCLAIMER - ALL INFO IS BASED ON MANUFACTURER CLAIMS, DONT GET ALL CRAZY IF YOU DISAGREE WITH THE BELOW
Wheel | Size | Weight kg | Approx cost per rim £ | Approx wheel set cost £ | Tyre | Tyre size | Tyre weight kg | Assembled weight with tyre | Wheel set assembly weight kg | Reduction in rotating mass & unsprung weight vs 2118 kg |
| | | | | | | | | | |
Speedline 2118 | 15x7 | 9.6 | 150 | 600 | Nangkang AR1 | 195/50/15 | 8.7 | 18.3 | 73.2 | NA |
Volk CE28N | 15x7 | 4.2 | NA | Used £1200+ | Nangkang AR1 | 195/50/15 | 8.7 | 12.9 | 51.6 | 21.6 |
Enkei RPF1 | 15x7 | 4.5 | 260 | 1040 | Nangkang AR1 | 195/50/15 | 8.7 | 13.2 | 52.8 | 20.4 |
OZ Superleggera | 15x7 | 4.99 | NA | NA | Nangkang AR1 | 195/50/15 | 8.7 | 13.69 | 54.76 | 18.44 |
OZ Ultraleggera | 15x7 | 4.99 | 177 | 708 | Nangkang AR1 | 195/50/15 | 8.7 | 13.69 | 54.76 | 18.44 |
ATS DTC | 15x7 | 5.7 | 190 | 760 | Nangkang AR1 | 195/50/15 | 8.7 | 14.4 | 57.6 | 15.6 |
TD Pro Race 1.2 | 15x7 | 6.2 | 130 | 520 | Nangkang AR1 | 195/50/15 | 8.7 | 14.9 | 59.6 | 13.6 |
| | | | | | | | | | |
Enkei RPF1 | 16x7 | 6.2 | 286 | 1144 | Nangkang AR1 | 205/45/16 | 9.2 | 15.4 | 61.6 | 11.6 |
TD Pro Race 1.2 | 16x7 | 7.4 | 151 | 604 | Nangkang AR1 | 205/45/16 | 9.2 | 16.6 | 66.4 | 6.8 |
Speedline 2120 Turini | 16x7 | 8.93 | NA | NA | Nangkang AR2 | 205/45/17 | 9.2 | 18.13 | 72.52 | 0.68 |
RPF1s i think i prefer in a 16" visually, but maybe doesnt make sense from a cost perspective. Alternatively the DTC is pretty but a good chunk heavier. All be it they will still be significantly lighter than the 2118s fitted.
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