Custom forged wheels for Porsche 718 Cayman 982 (2016-2025)

Technical specifications

Production period: 2016-2025

Original fitment measurements: Porsche 718 Cayman 982

The measurements of the car as delivered new, to identify yours and compare. Each value refers, by a number, to the sources that give it. They are not a recommendation: Onyx does not advise any specific offset.

Hub

Measurement	Original value
PCD (bolt pattern)	5x130^{[1, 2, 3, 4, 5, 6]}
Centre bore	71.6 mm^{[1, 2, 3, 4, 5]}
Thread	M14 x 1.5^{[2, 3, 4, 5, 6]}
Fixing	Wheel bolts^{[3, 6, 7]}
Bolt or nut seat	Not published
Tightening torque	160 Nm^{[1, 3, 6, 8, 9]}

“Not published”: no source gives it with the certainty we require at this stage (see the rule below).

Original fitments by version

Version and fitment	Front				Rear
Version and fitment	Diameter	Width	Original offset (manufacturer)	Tyre	Diameter	Width	Original offset (manufacturer)	Tyre
718 Cayman (982), 18 inches, summer	18″^{[8, 10]}	8J^{[8, 10]}	ET 57^{[8, 10]}	235/45 ZR18^{[8, 10]}	18″^{[8, 10]}	9.5J^{[8, 10]}	ET 49^{[8, 10]}	265/45 ZR18^{[8, 10]}
718 Cayman (982), 19 inches, summer	19″^{[8, 10]}	8J^{[8, 10]}	ET 57^{[8, 10]}	235/40 ZR19^{[8, 10]}	19″^{[8, 10]}	10J^{[8, 10]}	ET 45^{[8, 10]}	265/40 ZR19^{[8, 10]}
718 Cayman (982), 20 inches, 8J / 10J wheels, summer	20″^{[8, 10]}	8J^{[8, 10]}	ET 57^{[8, 10]}	235/35 ZR20^{[8, 10]}	20″^{[8, 10]}	10J^{[8, 10]}	ET 45^{[8, 10]}	265/35 ZR20^{[8, 10]}
718 Cayman (982), 20 inches, 8.5J / 10.5J wheels, summer	20″^{[8, 10]}	8.5J^{[8, 10]}	ET 57^{[8, 10]}	235/35 ZR20^{[8, 10]}	20″^{[8, 10]}	10.5J^{[8, 10]}	ET 47^{[8, 10]}	265/35 ZR20^{[8, 10]}
718 Cayman S (982), 19 inches, summer	19″^{[8, 10]}	8J^{[8, 10]}	ET 57^{[8, 10]}	235/40 ZR19^{[8, 10]}	19″^{[8, 10]}	10J^{[8, 10]}	ET 45^{[8, 10]}	265/40 ZR19^{[8, 10]}
718 Cayman S (982), 20 inches, 8J / 10J wheels, summer	20″^{[8, 10]}	8J^{[8, 10]}	ET 57^{[8, 10]}	235/35 ZR20^{[8, 10]}	20″^{[8, 10]}	10J^{[8, 10]}	ET 45^{[8, 10]}	265/35 ZR20^{[8, 10]}
718 Cayman S (982), 20 inches, 8.5J / 10.5J wheels, summer	20″^{[8, 10]}	8.5J^{[8, 10]}	ET 57^{[8, 10]}	235/35 ZR20^{[8, 10]}	20″^{[8, 10]}	10.5J^{[8, 10]}	ET 47^{[8, 10]}	265/35 ZR20^{[8, 10]}
718 Cayman Style Edition (982), 20 inches, 8.5J / 10.5J wheels, summer	20″^[8]	8.5J^[8]	ET 57^[8]	235/35 ZR20^[8]	20″^[8]	10.5J^[8]	ET 47^[8]	265/35 ZR20^[8]
718 Cayman GTS, GTS 4.0, T (982), 20 inches, 8J / 10J wheels, summer	20″^{[8, 10]}	8J^{[8, 10]}	ET 57^{[8, 10]}	235/35 ZR20^{[8, 10]}	20″^{[8, 10]}	10J^{[8, 10]}	ET 45^{[8, 10]}	265/35 ZR20^{[8, 10]}
718 Cayman GTS, GTS 4.0, T (982), 20 inches, 8.5J / 10.5J wheels, summer	20″^{[8, 10]}	8.5J^{[8, 10]}	ET 57^{[8, 10]}	235/35 ZR20^{[8, 10]}	20″^{[8, 10]}	10.5J^{[8, 10]}	ET 47^{[8, 10]}	265/35 ZR20^{[8, 10]}
718 Cayman GT4 (982), 20 inches, summer	20″^{[9, 11, 12]}	8.5J^{[9, 11, 12]}	ET 61^{[9, 11, 12]}	245/35 ZR20^{[9, 12]}	20″^{[9, 11, 12]}	11J^{[9, 11, 12]}	ET 50^{[9, 11, 12]}	295/30 ZR20^{[9, 12]}
718 Cayman GT4 RS (982), 20 inches, summer	20″^{[9, 12]}	8.5J^{[9, 12]}	ET 61^{[9, 12]}	245/35 ZR20^{[9, 12]}	20″^{[9, 12]}	11J^{[9, 12]}	ET 50^{[9, 12]}	295/30 ZR20^{[9, 12]}

The offsets are the original ones, given by the manufacturer or by the sources cited; they help you identify your car's fitment.

What Onyx can make for the Porsche 718 Cayman 982

Custom forged wheels in forged 6061-T6 aluminium, designed to JWL/VIA standards, in monoblock or two-piece construction; three-piece wheels are made on quotation.

The diameters below start at the smallest original diameter recorded on this car (18″) and go up to 24″.

Diameter	Monoblock, set of four wheels	Two-piece, set of four wheels
18″	€3,200 Great Britain: £3,336 with UK import VAT	€4,300 Great Britain: £4,482 with UK import VAT
19″	€3,200 Great Britain: £3,336 with UK import VAT	€4,300 Great Britain: £4,482 with UK import VAT
20″	€3,300 Great Britain: £3,440.40 with UK import VAT	€4,400 Great Britain: £4,586.40 with UK import VAT
21″	€3,550 Great Britain: £3,700.80 with UK import VAT	€4,750 Great Britain: £4,951.20 with UK import VAT
22″	€3,750 Great Britain: £3,908.40 with UK import VAT	€5,200 Great Britain: £5,420.40 with UK import VAT
23″	€3,950 Great Britain: £4,117.20 with UK import VAT	€5,750 Great Britain: £5,992.80 with UK import VAT
24″	€4,100 Great Britain: £4,273.20 with UK import VAT	€6,300 Great Britain: £6,566.40 with UK import VAT

Amounts in pounds: our checkout on 4 October 2026, before the carrier's clearance fee and any import duty. The amount shown at checkout is the one charged for your order.

Wheels delivered in 4 to 8 working weeks, shipping included, from full payment for an order on the website, or from the deposit for an order on quotation, and at the earliest from your approval of the measurements, the colour or the 3D render you asked for, under article 5.1 of the Terms and Conditions.

The offset and width of your wheels do not come from a table: the Onyx Forged design office calculates them for your car and your brakes, and submits them to you before machining.

Configure wheels for the Porsche 718 Cayman 982

Frequently asked questions: wheels for the Porsche 718 Cayman 982

What is the wheel tightening torque on a Porsche 718 Cayman (982)?

160 Nm, according to Porsche's bulletin on permitted wheels and tyres.^{[6, 8, 10]}

Which 718 Cayman versions accept the 18-inch fitment in summer?

Only the base 718 Cayman. Porsche rules it out on the Cayman S (“not applicable for S models”, bulletin 21/22; “basic models only”, bulletin 34/24) and lists only the 20-inch summer fitment for the GTS, GTS 4.0 and T. In winter, the 18 and 19-inch fitments remain permitted on these versions.^{[8, 10]}

What are the original fitments of the 718 Cayman GT4?

8.5J x 20 ET 61 with 245/35 ZR20 at the front, 11J x 20 ET 50 with 295/30 ZR20 at the rear.^{[9, 11]}

What is the load index of the original 18-inch tyres on the 718 Cayman?

94 (Y) at the front with 235/45 ZR18 and 101 (Y) at the rear with 265/45 ZR18, i.e. 670 kg and 825 kg per tyre.^{[8, 10, 13]}

Same fixing measurements

As original equipment, these cars have the same PCD, centre bore, thread and fixing as the Porsche 718 Cayman 982: PCD 5x130, centre bore 71.6 mm, thread M14 x 1.5, fixing: wheel bolts.

Audi e-tron GT F83 (since 2021)
Porsche 718 Boxster 982 (2016–2025)
Porsche 718 Boxster Spyder (982) (2019–2024)
Porsche 718 Spyder RS 982 (2023–2024)
Porsche 911 996 (1998–2005)
Porsche Cayenne E2 (92A) (2010–2017)
Porsche Cayenne E3 (9YA) (since 2018)
Porsche Panamera 971 (2016–2023)

Same fixing measurements; original diameters and offsets: see each car's page. The seat of the bolts or nuts, the width of the wheels and brake clearance are not compared here: this comparison is not an opinion on compatibility.

Sources for the measurements and answers

hubcentric-rings.com (Frontside Oy), Porsche Boxster / Cayman (secondary source, consulted on 10 October 2026)
H&R, Trak+ 5 mm DR spacer no. 10957161 “5/130 Center Bore 71.6 Bolt Thread 14x1.5” and its application list (718, 911 2012-2020…), reproduced by the dealer ORT Motorsport (secondary source, consulted on 10 October 2026)
SCC Fahrzeugtechnik, vehicle record Porsche 718 Cayman (982), 2016 onwards (secondary source, consulted on 10 October 2026)
ThreePiece.us, fitment record 2022 Porsche 718 Cayman (address “gts-4-0”, page titled “718 Cayman Base”): PCD, centre bore, fixing, thread, torque (secondary source, consulted on 10 October 2026)
wheel-sizes.com, Porsche 718 Cayman (secondary source, consulted on 10 October 2026)
wheelfitment.eu, Porsche Cayman 718 (secondary source, consulted on 3 October 2026)
Porsche Shop (official shop), “Anti-theft protection for wheels - 718/911/Panamera/Macan”, ref. PAF009593 (primary source, consulted on 10 October 2026)
Porsche AfterSales, manufacturer bulletin 982 “Approved: Wheels and Tires” 34/24 (718 Boxster / Cayman, July 2024 edition) (primary source, consulted on 3 October 2026)
Porsche AfterSales, manufacturer bulletin 982 “Approved: Wheels and Tires” 33/24 (718 Cayman GT4 / GT4 RS / Spyder, June 2025 edition) (primary source, consulted on 3 October 2026)
Porsche AfterSales, manufacturer bulletin 982 “Approved: Wheels and Tires” 21/22 (718 Boxster / Cayman, July 2022 edition) (primary source, consulted on 3 October 2026)
or24.de (Porsche original equipment wheels), 20-inch GT4 982 set (primary source, consulted on 3 October 2026)
Porsche AfterSales, manufacturer bulletin 982 “Approved: Wheels and Tires” 11/24 (718 Cayman GT4 / GT4 RS / Spyder) (primary source, consulted on 3 October 2026)
Fiches-auto.fr, tyre load index table (index → kg) (reference table, for a conversion, consulted on 3 October 2026)

Publication rule: a measurement is shown only if a primary source gives it (a manufacturer's document, an official vehicle type record, an original parts catalogue, the maker of the original wheel) without another primary source contradicting it, or if two independent specialist sources agree without a primary source contradicting them. The press and forums do not count. Measurements checked on 10 October 2026 by the Onyx Forged design office.

Designs for this generation

Three models from our catalogue, forged to measure for your Porsche 718 Cayman 982. The price is for a set of four wheels: it depends on the construction and the diameter.

Amounts in pounds: our checkout on 4 October 2026, before the carrier's clearance fee and any import duty. The amount shown at checkout is the one charged for your order.

Find my wheel · All 24 designs in the catalogue

See these wheels on your car

Custom forged wheels for the Porsche 718 Cayman 982

Forged 6061-T6 aluminium
5-axis CNC machining
Designed to JWL/VIA standards
Fitment worked out for your Porsche 718 Cayman 982

Porsche 982 wheels: the same PCD (bolt pattern) as the 911, incompatible measurements

The type 982 718 Cayman, produced from 2016 to 2025, uses the 5x130 PCD, exactly like a 911. This is the number one trap on this generation: the PCD figure suggests a compatibility that does not exist. The original rear offset of a 718 lies between ET 45 and ET 50, whereas that of a 911 992 Carrera or Targa is ET 67 in phase 1 and ET 79 to ET 81 in phase 2. At least seventeen millimetres of difference, for a strictly identical PCD.

The original fitments, from 18 to 20 inches

In 18 inches, which Porsche reserves in summer for the base 718 Cayman (not the S, GTS or T), the car takes 8J x 18 ET 57 at the front and 9.5J x 18 ET 49 at the rear, with 235/45 ZR18 and 265/45 ZR18 tyres. In 19 inches, on the Cayman and Cayman S, 8J x 19 ET 57 and 10J x 19 ET 45, with 235/40 R19 and 265/40 R19; Porsche excludes this 19-inch fitment on the Style Edition, and the GTS, GTS 4.0 and T take only 20-inch wheels in summer. In 20 inches, two fitments exist: 8J x 20 ET 57 and 10J x 20 ET 45, or 8.5J x 20 ET 57 and 10.5J x 20 ET 47, both with 235/35 ZR20 and 265/35 ZR20. The GT4 and GT4 RS are a case apart, including at the front: 8.5J x 20 ET 61 and 11J x 20 ET 50, with 245/35 ZR20 and 295/30 ZR20. A front offset of ET 61 is found nowhere else in the range.

Mid-engine: why the front-to-rear difference is so small

On a type 992 911 Carrera, the rear wheel is three inches wider than the front, 11.5J against 8.5J, because the engine sits behind the rear axle. On a mid-engined 718, this difference shrinks to one and a half inches in 18 inches and to two inches in 19 and 20 inches; it is two and a half inches on a GT4. The consequence is direct: the 718's front axle works with a proportionally wider and more offset wheel, and it is therefore more sensitive to an offset error than a 911. This is why a design developed for a 911 is never carried over as it is to a 718: the calculation is redone from the car's measurements.

A closed generation: 2016-2025

Production of the combustion-engined 718 stopped in October 2025, after a run that began in 2016. The fleet is now fixed, and original sets (the GT4 and the 20-inch GTS wheels in particular) are becoming scarce. Having a custom set made then becomes the normal way to replace a damaged wheel without leaving the car with a mismatched set, or to equip a collector's example without drawing on a stock that will not be replenished.

Configure your custom 982 forged wheels

We record the exact measurements of your 718 Cayman before any machining, version and model year included. Each set is cut from forged 6061-T6 aluminium on a 5-axis CNC centre, as monoblock, two-piece or three-piece wheels. Our wheels are designed to JWL/VIA standards. Price and lead time each have their own page: custom forged wheel prices and lead time. Write to us at contact@onyxforgedwheels.com or start your configuration.

Configure custom wheels for your Porsche 718 Cayman 982: free 3D render, on request.

Useful guides

See all Porsche models.