{"title":"BMW M2\/3\/4 G80\/82\/87","description":null,"products":[{"product_id":"bmw-m3-g80-m4-g82-front-rotor-pair-380-36","title":"BMW M2 G87 \/ M3 G80 \/ M4 G82 Front Two-Piece Rotor Pair — 380×36mm","description":"\u003cp\u003e\u003cstrong\u003eG80 M3 \/ G82 M4 front rotors — 380 × 36 mm, sold as a pair.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSame 380 mm diameter as the F80, 6 mm thicker, and a different hub. The G-series front disc is 380 × 36 mm on a 67 mm centre bore; the F80's 380 × 30 mm disc shares the diameter and nothing else. That is the single most common wrong part we get asked about.\u003c\/p\u003e\n\u003cp\u003eG3500 high-carbon ring, 63 mm total height, 5 bolt holes on the 67 mm bore, 6061-T6 aluminium hat with stainless floating hardware. A thicker disc means more heat capacity at the same diameter — useful on a car heavier than the F80 it replaced.\u003c\/p\u003e\n\u003cp\u003eMeasure thickness before anything else. Both the F80 and the G80 run a 380 mm front disc; only the G80 is 36 mm thick against 30 mm, on a 63 mm hat against 62.4 mm. A caliper set up for a 30 mm disc will not take a 36 mm one.\u003c\/p\u003e\n\u003cp\u003eOE reference 34108093709 \/ 34108093710 · Minimum thickness 34.0 mm · Bolt holes 5\u003c\/p\u003e\n\u003cdetails\u003e\n  \u003csummary\u003e▸ \u003cstrong\u003eFitment check\u003c\/strong\u003e\u003c\/summary\u003e\n  \u003cp\u003eG80 M3 and G82 M4 front, 380 × 36 mm — OE 34108093709 and 34108093710. Not the 380 × 30 mm F8x disc.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003e▸ \u003cstrong\u003eFixed or full-floating — which one?\u003c\/strong\u003e\u003c\/summary\u003e\n  \u003cp\u003eThe G80 is heavy enough that we default to Full-floating for cars that see track days. Fixed remains the quieter choice for a daily.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003e▸ \u003cstrong\u003ePads, bedding and ring replacement\u003c\/strong\u003e\u003c\/summary\u003e\n  \u003cp\u003eA thicker disc runs cooler at the face, which changes bed-in — take two or three extra stops beyond the usual six to eight to get a full transfer layer.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003e▸ \u003cstrong\u003eLead time\u003c\/strong\u003e\u003c\/summary\u003e\n  \u003cp\u003eBuilt to order. Production takes 10–12 days. Left and right are matched and marked before packing. Transit time depends on destination and service — we confirm shipping and delivery dates by email before you pay.\u003c\/p\u003e\n\u003c\/details\u003e","brand":"ZORVANT","offers":[{"title":"Full-floating","offer_id":51267394044129,"sku":"ZR-T-1077-FL","price":639.0,"currency_code":"USD","in_stock":true},{"title":"Fixed","offer_id":51267394011361,"sku":"ZR-T-1077-FX","price":589.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0864\/1901\/3857\/files\/rotor-floating-2000.png?v=1793682959"},{"product_id":"bmw-m3-g80-m4-g82-rear-rotor-pair-370-24","title":"BMW M2 G87 \/ M3 G80 \/ M4 G82 Rear Two-Piece Rotor Pair — 370×24mm","description":"\u003cp\u003e\u003cstrong\u003eG80 M3 \/ G82 M4 rear rotors — 370 × 24 mm, sold as a pair.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe G-series rear disc is 370 × 24 mm like the F80's, but the hat is 38 mm tall instead of 64.8 mm — the parking brake drum sits somewhere else entirely. Same diameter, different offset: this is not a part you can judge by the number on the box.\u003c\/p\u003e\n\u003cp\u003eG3500 ring with integrated drum, 6061-T6 hat, 67 mm centre bore, 5 bolt holes, stainless floating hardware. 24 mm thick against a 22.0 mm minimum. The drum is machined into the ring, so the parking brake surface arrives with the disc rather than being carried over from the old one.\u003c\/p\u003e\n\u003cp\u003eThe tell is the hat: 38 mm on the G80 against 64.8 mm on the F80, at an identical 370 mm diameter. Put a straight edge across the hat and measure to the friction face — the 27 mm difference is impossible to miss once you look.\u003c\/p\u003e\n\u003cp\u003eOE reference 34208093729 \/ 34208093730 · Minimum thickness 22.0 mm · Bolt holes 5\u003c\/p\u003e\n\u003cdetails\u003e\n  \u003csummary\u003e▸ \u003cstrong\u003eFitment check\u003c\/strong\u003e\u003c\/summary\u003e\n  \u003cp\u003eG80 and G82 rear, 370 × 24 mm, 38 mm hat — OE 34208093729 and 34208093730. Not the F80 rear disc.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003e▸ \u003cstrong\u003eFixed or full-floating — which one?\u003c\/strong\u003e\u003c\/summary\u003e\n  \u003cp\u003eRear, road use: Fixed. Full-floating if you track the car and want the ring to stay flat through repeated rear heat cycles.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003e▸ \u003cstrong\u003ePads, bedding and ring replacement\u003c\/strong\u003e\u003c\/summary\u003e\n  \u003cp\u003eWith the drum inside the hat, check the drum face whenever you change rear pads — scoring there causes a grinding noise that sounds like a wheel bearing.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003e▸ \u003cstrong\u003eLead time\u003c\/strong\u003e\u003c\/summary\u003e\n  \u003cp\u003eBuilt to order. Production takes 10–12 days. Left and right are matched and marked before packing. Transit time depends on destination and service — we confirm shipping and delivery dates by email before you pay.\u003c\/p\u003e\n\u003c\/details\u003e","brand":"ZORVANT","offers":[{"title":"Full-floating","offer_id":51267394306273,"sku":"ZR-T-1078-FL","price":599.0,"currency_code":"USD","in_stock":true},{"title":"Fixed","offer_id":51267394273505,"sku":"ZR-T-1078-FX","price":549.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0864\/1901\/3857\/files\/rotor-floating-2000.png?v=1793682959"}],"url":"https:\/\/zorvantbrake.com\/collections\/bmw-m2-3-4-g80-82-87.oembed","provider":"ZORVANT","version":"1.0","type":"link"}