No. 29-23
Service Bulletin Details
Public Details for: No. 29-23
Instructions on manufacturers certificate for approved wheels and tires
Models from 2024
2024 PORSCHE 911 GT3 |
2024 PORSCHE 911 GT3 RS |
Models from 2022
2022 PORSCHE 911 GT3 |
2022 PORSCHE 911 GT3 TOURING |
Models from 2021
2021 PORSCHE 911 GT3 |
4 911 (992) Manufacturer's Certificate 29/23 ENU 4400 Approved: Wheels and Tires (29/23) Revision: This bulletin replaces bulletin Group 4 26/23, dated October 10, 2023. Model Year: As of 2021 Vehicle Type: Type 992: 911 GT3, 911 GT3 Touring package, 911 GT3 RS, 911 S/T Information: Approval status: September 2023 Sizes: Permissible summer tires and wheel sizes (RO = rim offset in mm, FA = front axle, RA = rear axle) Tire sizes Wheel sizes Snow chains 911 GT3, 911 GT3 Touring-Package, 911 S/T Summer (UHP) 20/21-inch FA: 255/35 ZR 20 (97Y) XL RA: 315/30 ZR 21 (105Y) XL FA: 9.5J x 20, RO 46 RA: 12J x 21, RO 45 No 20/21-inch FA: 245/35 R 20 95V XL RA: 305/30 R 21 104V XL FA: 9J x 20, RO 43 RA: 11.5J x 21, RO 46 RA only Tire sizes Wheel sizes Snow chains FA: 10J x 20, RO 45 RA: 13J x 21, RO 31 No 20/21-inch FA: 255/35 ZR 20 (93Y) RA: 315/30 ZR 21 (105Y) XL Winter 911 GT3 RS Summer (UHP) 20/21-inch FA: 275/35 ZR20 (102Y) XL RA: 335/30 ZR21 (109Y) XL AfterSales Nov 17, 2023 Page 1 of 10 4 911 (992) 4400 ENU Manufacturer's Certificate 29/23 Tire sizes Wheel sizes Snow chains FA: 9J x 20, RO 43 RA: 11.5J x 21, RO 46 RA only Winter 20/21-inch FA: 245/35 R 20 95V XL RA: 305/30 R 21 104V XL Wheels: Overview of Porsche wheels for summer (UHP) and winter tires Identification on the inside of the wheel: Wheel size, rim offset (RO) in mm, part number (without color code marking FFF) and Porsche logo 20/21-inch wheel “GT3” FA: 9.5J x 20, RO 46 (summer (UHP)) Part No. 9GT.601.025.Q_FFF RA: 12J x 21, RO 45 (summer (UHP)) Part No. 9GT.601.025.R_FFF FA: 9J x 20, RO 43 (winter) Part No. 9GT.601.025.B_FFF RA: 11,5J x 21, RO 46 (winter) Part No. 9GT.601.025.C_FFF GT3 20/21-inch wheel “S/T” FA: 9,5J x 20, RO 46 (summer) Part No. 9GT.601.025.BE_FFF RA: 11.5J x 21, RO 46 (summer) Part No. 9GT.601.025.BF_FFF S/T Nov 17, 2023 Page 2 of 10 AfterSales 911 (992) Manufacturer's Certificate 29/23 ENU 4400 4 20/21-inch wheel “GT3 RS” basic wheel FA:10J x 20, RO 45 (summer) Part No. 9GT.601.025.AE_FFF RA: 13J x 21, RO 31 (summer) Part No. 9GT.601.025.T__FFF GT3 RS basic wheel 20/21-inch wheel “GT3 RS” Aluminum lightweight forged wheel FA:10J x 20, RO 45 (summer) Part No. 9GT.601.025.AF_FFF RA: 13J x 21, RO 31 (summer) Part No. 9GT.601.025.AH_FFF GT3 RS Aluminum lightweight forged wheel 20/21-inch wheel “GT3 RS” FA:10J x 20, RO 45 (summer) Part No. 9GT.601.025.AL_FFF RA: 13J x 21, RO 31 (summer) Part No. 9GT.601.025.AM_FFF GT3 RS AfterSales Nov 17, 2023 Page 3 of 10 4 911 (992) 4400 ENU Manufacturer's Certificate 29/23 Information Improper handling can damage the wheel surface. Carry out tire removal and mounting using a bead holding-down device only. Use a leather pad on the rim flange to support the valve insertion tool. Only use the Porsche centering clamping set for balancing. Do not use brushes to clean the wheels because brushes can cause deep scratches that cannot be removed by polishing. Never use solvents or other chemical substances on tires. Wheel Mounting: Summer (UHP): using central wheel lock: Tightening torque 600 Nm (444 ftlb.) Tire make and type / Label value (Link to EU database) Tire size 911 GT3, 911 GT3 Touring-Package, 911 S/T Michelin Pilot Sport Cup 2 N0 FA: https://eprel.ec.europa.eu/qr/410894 RA: https://eprel.ec.europa.eu/qr/408874 Goodyear Eagle F1 Super Sport R N0 No offer for 992 S/T FA: https://eprel.ec.europa.eu/qr/530187 RA: https://eprel.ec.europa.eu/qr/530188 Goodyear Eagle F1 Super Sport RS N0 FA: 255/35 ZR 20 (97Y) XL RA: 315/30 ZR 21 (105Y) XL No offer for 992 S/T FA: https://eprel.ec.europa.eu/qr/1079540 RA: https://eprel.ec.europa.eu/qr/1100069 Michelin Pilot Sport Cup 2 R N0 No offer for 992 S/T FA: https://eprel.ec.europa.eu/qr/409102 RA: https://eprel.ec.europa.eu/qr/408957 Pirelli P Zero Trofeo R N0 No offer for 992 S/T FA: Label values currently not available. RA: Label values currently not available. Nov 17, 2023 Page 4 of 10 AfterSales 911 (992) Manufacturer's Certificate 29/23 ENU 4400 4 Tire make and type / Label value (Link to EU database) Tire size FA: 255/35 ZR 20 (93Y) RA: 315/30 ZR 21 (105Y) XL Pirelli P-Zero Corsa N0 FA: https://eprel.ec.europa.eu/qr/596215 RA: https://eprel.ec.europa.eu/qr/596216 Tire make and type / Label value (Link to EU database) Tire size 911 GT3 RS Michelin Pilot Sport Cup 2 N0 FA: https://eprel.ec.europa.eu/qr/1138011 RA: https://eprel.ec.europa.eu/qr/1138008 Goodyear Eagle F1 Supersport R N0 FA: 275/35 ZR20 (102Y) XL RA: 335/30 ZR21 (109Y) XL FA: https://eprel.ec.europa.eu/qr/1057890 RA: https://eprel.ec.europa.eu/qr/1057891 Pirelli P-Zero Corsa N0 FA: https://eprel.ec.europa.eu/qr/596966 RA: https://eprel.ec.europa.eu/qr/596967 Michelin Pilot Sport Cup 2 R N0 Label values currently not available Winter Tires: Tire make and type / Label value (Link to EU database) Tire size 911 GT3, 911 GT3 Touring-Package, 911 GT3 RS, 911 S/T Michelin Pilot Alpin 5 NA5 FA: https://eprel.ec.europa.eu/qr/411084 FA: 245/35 R 20 95V XL RA: 305/30 R 21 104V XL RA: https://eprel.ec.europa.eu/qr/410097 Goodyear Ultragrip Performance Gen-1 NA0 Not for India. FA: https://eprel.ec.europa.eu/qr/529616 RA: https://eprel.ec.europa.eu/qr/529627 AfterSales Nov 17, 2023 Page 5 of 10 4 911 (992) 4400 ENU Manufacturer's Certificate 29/23 Arrow with inscription “Rotation” = directional mounting “Inside/Outside” inscription = mounting on specified side only Arrow with both inscriptions “Rotation” and “Inside/Outside” = directional mounting on specified side only. Information If a tire is damaged and it is not possible to determine with absolute certainty that there is no ply damage - with all of its consequences - or if the tire was thermally and/or mechanically overloaded due to a loss of pressure or other prior damage, replace the tire in question for safety reasons. Repairs to "V", "W", "Y" and "ZR" tires are not permissable, as well as the use of inner tubes in tubeless tires. Please inform your customers accordingly. It is advisable to mount winter tires at temperatures below 45° F/7°C , because the driving characteristics of summer tires are reduced at low temperatures. Extremely low temperatures can cause permanent damage to summer tires. Information "N..." = Specification code of the tire, e.g. "NA0", "NA1", "NA2" ... The complete “N ...” code of the relevant tire makes must be shown on the tire sidewall near the type designation. Instructions for correct mounting of the tires are also given on the tire sidewall. If there are no mounting instructions on the tire sidewall, the tire must be mounted so that the DOT marking is visible from the outside. WARNING Driving with different tires (mixed tires) • Uncontrollable vehicle handling Only use tires of the same make and type, with the same speed index and the same specification code (NA0, NA1, NA2, etc.) on a vehicle. Tire pressure: WARNING Incorrect tire pressure • Uncontrollable vehicle handling Adjust the tire pressure according to specifications. Never allow the pressure to fall below the minimum pressure. Check age of tires. Replace tires that are more than 6 years old. Perform visual inspections. Use only tires recommended by Porsche. Nov 17, 2023 Page 6 of 10 AfterSales 911 (992) Manufacturer's Certificate 29/23 ENU 4400 4 WARNING Driving at high speed with low tire pressure can cause irreparable damage to tires. Set Comfort air pressure for tires only on vehicles with Tire Pressure Monitoring System (TPMS) and “Comfort” selected in the "Tire pressure" main menu in the multi-function display. Information The tire pressure applies only to the tire makes and types approved by Porsche, and is specified for cold tires (approx. 68° F/20°C ). The tire pressures must never be lower than the specified values. Standard tire pressure for summer tires (UHP) Standard tire pressure for summer tires (UHP) 911 GT3, 911 GT3 Touring package Performance pressure up to 290 km/h (180 mph) Tire size Wheel size Axle Standard pressure up to Vmax 255/35 ZR 20 9.5J x 20 FA 2.2 bar 32 psi 1.9 bar 28 psi 315/30 ZR 21 12J x 21 RA 2.4 bar 35 psi 2.1 bar 30 psi Standard tire pressure for summer 911 S/T Tire size Wheel size Axle Standard pressure up to Vmax 255/35 ZR 20 9.5J x 20 FA 1.9 bar 28 psi 315/30 ZR 21 12J x 21 RA 2.1 bar 30 psi AfterSales Nov 17, 2023 Page 7 of 10 4 911 (992) 4400 ENU Manufacturer's Certificate 29/23 Standard tire pressure for summer tires (UHP) 911 GT3 RS Performance pressure up to 290 km/h (180 mph) Tire size Wheel size Axle Standard pressure up to Vmax 275/35 ZR 20 10J x 20 FA 2.1 bar 30 psi 1.9 bar 28 psi 335/30 ZR 21 13J x 21 RA 2.2 bar 32 psi 2.0 bar 29 psi Standard tire pressure for winter tires Standard tire pressure for winter tires 911 GT3, 911 GT3 Touring-Package, 911 GT3 RS, 911 S/T Tire size Wheel size Axle 245/35 R 20 9J x 20 FA 2.3 bar 33 psi – 305/30 R 21 11.5J x 21 RA 2.5 bar 36 psi – Snow chains: WARNING Incorrectly installed snow chains • Uncontrollable vehicle handling Do not exceed the maximum speed of Speed 30 mph/50 km/h. Observe installation instructions from the chain manufacturer. Nov 17, 2023 Page 8 of 10 Performance pressure up to 290 km/h (180 mph) Standard pressure up to Vmax AfterSales 911 (992) Manufacturer's Certificate 29/23 ENU 4400 4 Porsche offers the following snow chains as accessories: Tire size Porsche Part No. Type of snow chain 305/30 R 21 992.044.690.A Link-type chain, quick fit The snow chain tension must be readjusted after driving about 3 km (2 miles)! Wheel Storage: • • • • • • • • General Information: • • • • • Tires must be stored in a cool, dry and dark room with adequate ventilation. Tires must never come into contact with fuel, oil, grease or chemicals. Do not store summer tires in storage areas with ambient temperatures of less than 5° F (-15° C). Complete wheel & tire assemblies can be stacked for storage; we recommend that you increase the tire pressure by approximately 6 psi (0.4 bar). Optimum conditions for storage of the complete wheels are provided by the Original Porsche storage trolley, Part No. 000.044.000.38. If the tires are not mounted on wheels, it is best to store them in a vertical position. We recommend that you turn tires stored in this position every two weeks in order to prevent flat spots. Tires that are stacked in a horizontal position will become severely deformed and cannot be seated properly in the rim flange when they are mounted. Always use new valves when changing tires. Always observe any possible instructions concerning the rolling direction and/or specifying which side the tires must be mounted on. Coat the tire beads and humps with mounting lubricant before mounting the tire. This ensures that the tire beads will slide over the humps easily. In order to prevent the tire from turning on the wheel, avoid extreme driving maneuvers (acceleration and braking) during the first 100 to 200 miles with new or recently mounted tires. In order to optimize smoothness of rolling, it is appropriate - and necessary in individual cases - to mount the tire in a certain (favorable) position with respect to the wheel (matching). Matching (uncontrolled and controlled) is explained below: Uncontrolled matching: • Turning the tire on the wheel by 90° or 120° if necessary in order to achieve an acceptable value with regard to rolling smoothness (true running, imbalance and weight distribution of balance weights). Controlled matching: • • • With a balancing machine with matching program. In most cases, this produces an even better result with regard to the rolling smoothness (true running, imbalance and weight distribution of the balance weights) than can be achieved with uncontrolled matching. Maximum permissible radial runout and lateral runout of the wheels < 0.7 mm. Maximum permissible radial runout and lateral runout of the wheels with tires < 1.25 mm. Values < 1.50 mm -ideally approx. 0.5 mm - are desirable. The mounting pressure (seating pressure) of 58 psi/4.0 bar overpressure must not be exceeded before both tire beads are evenly seated on the rim flange. AfterSales Nov 17, 2023 Page 9 of 10 4 911 (992) 4400 ENU Manufacturer's Certificate 29/23 New Tires (Replacements): • • • • If new tires are to be mounted or the tires of one axle are to be replaced, tires of the same make, type and with the same specification code must always be used on each of the two axles. If tires are replaced on one axle only, the different tread depth from that on the other axle can cause a noticeable change in the familiar handling. This is especially the case if new tires are mounted on the rear axle. This effect decreases with increasing tire mileage. When replacing a tire on an axle, make sure that the tread depth of the new tire does not differ from that of the other tire on the same axle by more than 30 %. Refer to WM 449503 for specific details of the vehicle you are working on. • • >The 2mm specification will be given here. > If there is none listed then the default is 30%. Repairs to Tires: • • If a tire is damaged and it cannot be determined with absolute certainty that there is no ply damage - with all of its consequences - or if the tire was thermally or mechanically overloaded due to a loss of pressure or other prior damage, we recommend replacement of the tire in question for safety reasons. Repairs to "V", "W", "Y", and "ZR" tires are not permissible, as is the use of inner tubes in tubeless tires. Tire Aging: • • • • • • • Tires age due to chemical and physical processes, which can impair their function. Tires that are stored unused for an extended period harden and become brittle faster than tires that are in continual use. Hairline aging cracks can occur on older tires. On tires in continual use, the kneading action activates the plasticizer in the rubber and thereby prevents hardening and cracking. Therefore, attention should be paid not only to the tread depth but also to the age of the tire. Tires should not be older than 6 years. The age of the tire can be determined via the DOT code on the sidewall, which indicates the production date of the tire: e.g. DOT 2201= 22nd week of 2001. Important Notice: Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicians who have attended Porsche service training courses. They are written to inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special tools may be necessary in order to perform certain operations identified in these bulletins. Use of tools and procedures other than those Porsche recommends in these bulletins may be detrimental to the safe operation of your vehicle, and may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions, and know-how to do the job properly and safely. Part numbers listed in these bulletins are for reference only. The work procedures updated electronically in the Porsche PIWIS diagnostic and testing device take precedence and, in the event of a discrepancy, the work procedures in the PIWIS Tester are the ones that must be followed. © 2023 Porsche Cars North America, Inc. Nov 17, 2023 Page 10 of 10 AfterSales