For 310 mm auto car wheel spacers adapter shims plate, compatible with bolt patterns 4x100, 4x114.3, 5x100, 5x108, 5x114.3, 5x120. Material and construction: aluminum alloy spacers with wheel gaskets; strong, rustproof and durable. Broad compatibility: designed to be suitable for most models, helping avoid brake interference and caliper contact. Performance improvement: increasing the wheel width widens the track, improving handling and cornering; turning is smoother and body roll is reduced for better overall performance. Key attributes: function as spacers and adapters, compatible bolt patterns, 310 mm thickness range, durable aluminum alloy construction. Use scenarios: Daily driving or performance tuning to enhance handling and stability. Vehicles with clearance issues between wheel hubs and calipers needing spacer solutions. Upgrading or swapping wheels that require different bolt patterns while maintaining proper fitment.