The 3SDM 1.10-R is the trackday and clubman competition variant of the brand's 1-piece build-to-order forged programme — engineered with an explicit performance-first mandate rather than the road-use balance of the 1.01-R. Where the 1.01-R's BTO specification encompasses road, prestige, and motorsport applications, the 1.10-R is optimised specifically for the weight and structural efficiency priorities of track and race use. Spoke geometry, hub pocket design, and centre section wall thicknesses are calibrated to achieve the minimum weight that passes the structural load case for the vehicle's track-use application.
The 1.10-R's 6082-T6 aluminium billet construction is identical in material to the 1.01-R — the distinction lies in the geometric choices made during the FEA optimisation stage. On a road wheel, conservatism is built into structural margins to accommodate unpredictable impact events (kerbs, potholes). On a track wheel, the load case is more controlled — the surface is smooth, speeds are documented, and the operator is experienced — allowing FEA to be run against a more precisely defined envelope and section sizes to be reduced accordingly. The 1.10-R exploits this distinction to achieve wheel weights that a conservative road specification would not permit.
Available from 15" to 20" in any width and offset combination, the 3SDM 1.10-R serves circuit racing, hillclimb, sprint, trackday, and time attack builds at any level from regional club competition to professional series. Its build-to-order nature means it can be specified to any class regulation, any homologated dimension, and any finish requirement — from bare machined alloy for minimum weight to any colour or surface treatment the customer specifies.
| Diameter | Typical Width Range | Offset (ET) | PCD | Application |
|---|---|---|---|---|
| 15" | 6.0J–9.5J | Custom | Any 4/5-bolt | Historic racing, clubman |
| 16" | 6.5J–10.0J | Custom | Any 4/5-bolt | Club circuit, sprint |
| 17" | 7.0J–11.0J | Custom | Any 4/5-bolt | Track day, hillclimb |
| 18" | 7.5J–11.5J | Custom | Any 5/6-bolt | Track day, GT class |
| 19" | 8.0J–12.0J | Custom | Any 5/6-bolt | GT racing, time attack |
| 20" | 8.5J–12.5J | Custom | Any 5/6-bolt | Wide-body race |
All dimensions are produced to customer specification. The 1.10-R has no hard dimensional limits — every wheel is engineered to the specific application.
3SDM's UK manufacturing base is engineered for flexibility. The 1.10-R can accommodate any diameter and width required for class-specific motorsport regulations. If your build requires a diameter, width, or offset outside the standard 3SDM 1.10-R sizing matrix, Hodoor World's bespoke ordering service can accommodate virtually any configuration.
Contact the Hodoor World team at [email protected] to discuss your exact specification with a fitment expert. No dimension is beyond consideration — 3SDM has historically machined wheels from 200 kg solid billets of 6082-T6 aluminium to achieve builds that defy conventional catalogue limits. We also offer an AI Wheel Design Service for enthusiasts who want a fully custom spoke configuration developed specifically for their vehicle and vision.
The 1.10-R is specified by its use case — any vehicle running on track or in competition can be fitted with a 1.10-R built to the appropriate specification.
Every 1.10-R specification begins with a conversation about how the vehicle will be used. Contact Hodoor World at [email protected] or WhatsApp +44 7488 818747 to begin the specification process.
3SDM 1.10-R is available in all major bolt patterns. Standard PCDs include 5×108, 5×112, 5×114.3, 5×120, 5×100, 4×100, and 4×108. Less common patterns including 5×130, 6×139.7, and others can be arranged through the bespoke order programme.
| Model | Design | Sizes | Finishes | Key Feature |
|---|---|---|---|---|
| 0.01 | Multi-spoke deep concave | 18"–20" | Silver Cut, Matt Black | The original 3SDM wheel |
| 0.04 | Staggered directional | 18"–20" | Silver Cut, Matt Black, Gloss Black | Numbered spoke flanges |
| 0.05 | 5-spoke | 16"–19" | Silver Cut, Matt Black, Gloss Black, Polished | Ferrari F40 inspired |
| 0.06 | Staggered directional | 18"–19" | Silver Cut, Matt Black, Gloss Black | Industry-first staggered mono |
| 0.08 | Bold 5-spoke | 20" only | Silver Cut, Matt Black | 0.05 concept at 20" |
| 0.09 | Retro multi-spoke | 18"–19" | Silver Cut + polished lip | Mirror-polished barrel lip |
| 0.50 | 5 split-spoke | 20" only | Silver Cut, Matt Black | Spin-forged construction |
| 0.66 | Motorsport CNC graphic | 18"–20" | Silver Cut, Matt Black, Mirror | CNC machined spoke detail |
If the 3SDM 1.10-R is not the right match, Hodoor offers a custom forged wheel manufacturing service with no minimum order. Contact us at [email protected] or WhatsApp +44 7488 818747 with your specification and we will connect you with a manufacturing specialist.
How does the 1.10-R differ from the 1.01-R?
Both are 1-piece BTO forged wheels from 6082-T6, machined at 3SDM's UK facility. The 1.01-R uses conservative structural margins for road and prestige use, accounting for unpredictable road loads. The 1.10-R uses tighter FEA margins appropriate for controlled track environments — resulting in lighter section sizes and lower finished weight for comparable structural integrity under competition conditions.
Can the 1.10-R be homologated for competitive motorsport?
3SDM can provide FEA reports, structural test certificates, and material certification. Many organising bodies accept this documentation. For classes with specific homologation requirements (FIA, VIA/JWL-TS stamps), discuss regulation requirements before specification.
What is the lightest configuration available?
A 15" × 6J with minimal spoke geometry in bare machined alloy is the lightest achievable configuration — typically 4.5–6.5 kg. In 18" × 9J competition specification, weights of 6.5–8 kg are achievable. The 1.10-R is engineered to achieve the minimum weight for your confirmed specification.
Is the bare machined alloy finish structural or cosmetic?
Bare machined alloy removes the weight of primer, powder coat, and lacquer layers (nominally 100–300 g per wheel). It is appropriate for competition use where appearance is secondary to weight. A standard alloy sealant can be applied to slow surface oxidation without adding significant weight.
What is the typical lead time for a competition set?
Standard sets of four wheels in a single specification typically take 8–14 weeks from confirmation and deposit. Complex builds with different front/rear specifications or unusual finishes may extend to 16–18 weeks. Racing season scheduling should be discussed as early as possible.
Can I arrange a facility visit to discuss my specification?
Visits to 3SDM's UK manufacturing facility can be arranged for serious enquiries. Contact Hodoor World at [email protected] or WhatsApp +44 7488 818747 to discuss specification and arrange a visit where appropriate.
Hodoor World is the destination for premium alloy wheel enthusiasts worldwide. Browse the complete 3SDM collection and explore every configuration for your build.
Regular maintenance preserves finish quality and structural performance. Following these guidelines will keep your 3SDM 1.10-R in showroom condition.
Hodoor World ships 3SDM wheels worldwide via trusted freight partners. Every order is fully insured and tracked, with delivery to Europe, the Middle East, North America, Asia-Pacific, and beyond. Wheels are individually packaged with custom foam inserts to protect machined faces and polished surfaces during transit.
Import duties, VAT, and customs clearance fees may apply — our logistics team advises at order confirmation. Contact us at [email protected] for a tailored shipping quote for remote locations or large sets.
