1978 Jeep CJ tire and wheel sizes, bolt pattern and tire pressure

Check the tables below for every tire size, wheel size, bolt pattern (PCD), rim offset and tire pressure fitted to the 1978 Jeep CJ.

1978 Jeep CJ tire sizes

225/75RS15 235/75RS15

Bolt pattern

5x139.7

2 generations were sold in 1978. Check your chassis code before ordering wheels.

Other years

1974 1975 1976 1977 1978 1979 1980 1981 All 1945–1986

Fitment tables

6 trims sold in 1978

Open a trim for its factory package and every alternative size, front and rear. More than one generation was on sale this year — check the chassis code against your VIN before ordering.

Jeep CJ CJ-7/CJ-8

1976 – 1986 USA market 5 trims

CJ 2.4D

60 hp · 2.4L I4 205x SR15 3 fitments

GenerationCJ-7/CJ-8 1976–1986

Power60 hp

Engine2.4L I4, Diesel

Center bore108 mm

PCD5x139.7

Thread1/2" - 20 UNF

Tire size	Rim size and bolt pattern	Pressure, psi	Prices
205x SR15	15x6 ET12 ~~5x139.7~~	–	Tires Rims
225/75 SR15	15x7 ET-12 ~~5x139.7~~	–	Tires Rims
235/75 SR15	15x8 ET-12 ~~5x139.7~~	–	Tires Rims

CJ 2.5

105 hp · 2.5L I4 205x SR15 3 fitments

GenerationCJ-7/CJ-8 1976–1986

Power105 hp

Engine2.5L I4, Petrol

Center bore108 mm

PCD5x139.7

Thread1/2" - 20 UNF

Tire size	Rim size and bolt pattern	Pressure, psi	Prices
205x SR15	15x6 ET12 ~~5x139.7~~	–	Tires Rims
225/75 SR15	15x7 ET-12 ~~5x139.7~~	–	Tires Rims
235/75 SR15	15x8 ET-12 ~~5x139.7~~	–	Tires Rims

CJ 3.8

99 hp · 3.8L I6 205x SR15 3 fitments

GenerationCJ-7/CJ-8 1976–1986

Power99 hp

Engine3.8L I6, Petrol

Center bore108 mm

PCD5x139.7

Thread1/2" - 20 UNF

Tire size	Rim size and bolt pattern	Pressure, psi	Prices
205x SR15	15x6 ET12 ~~5x139.7~~	–	Tires Rims
225/75 SR15	15x7 ET-12 ~~5x139.7~~	–	Tires Rims
235/75 SR15	15x8 ET-12 ~~5x139.7~~	–	Tires Rims

CJ 4.2

112 hp · 4.2L I6 205x SR15 3 fitments

GenerationCJ-7/CJ-8 1976–1986

Power112 hp

Engine4.2L I6, Petrol

Center bore108 mm

PCD5x139.7

Thread1/2" - 20 UNF

Tire size	Rim size and bolt pattern	Pressure, psi	Prices
205x SR15	15x6 ET12 ~~5x139.7~~	–	Tires Rims
225/75 SR15	15x7 ET-12 ~~5x139.7~~	–	Tires Rims
235/75 SR15	15x8 ET-12 ~~5x139.7~~	–	Tires Rims

CJ 5.0

126 hp · 5.0L V8 205x SR15 3 fitments

GenerationCJ-7/CJ-8 1976–1986

Power126 hp

Engine5.0L V8, Petrol

Center bore108 mm

PCD5x139.7

Thread1/2" - 20 UNF

Tire size	Rim size and bolt pattern	Pressure, psi	Prices
205x SR15	15x6 ET12 ~~5x139.7~~	–	Tires Rims
225/75 SR15	15x7 ET-12 ~~5x139.7~~	–	Tires Rims
235/75 SR15	15x8 ET-12 ~~5x139.7~~	–	Tires Rims

Jeep CJ CJ-5/CJ-6

1955 – 1983 USA market 1 trim

CJ 3.8

99 hp · 3.8L I6 6.85x D15 4 fitments

GenerationCJ-5/CJ-6 1955–1983

Power99 hp

Engine3.8L I6, Petrol

Center bore108 mm

PCD5x139.7

Thread1/2" - 20 UNF

Tire size	Rim size and bolt pattern	Pressure, psi	Prices
6.85x D15	15x5.5 ET12 ~~5x139.7~~	25	Tires Rims
7.00x D15	15x5.5 ET12 ~~5x139.7~~	28	Tires Rims
7.35x D15	15x5.5 ET12 ~~5x139.7~~	25	Tires Rims
6.00x D16	16x4.5 ET22 ~~5x139.7~~	2	Tires Rims

Reading the table

What these columns mean

OE fitment: The package fitted at the factory for that trim.
Alternative: A size the car accepts without modification — plus-sizing, winter setups or optional wheels.
Rim size: Rim diameter × width in inches, and the factory offset (ET) in millimetres, e.g. 18x7.5 ET25.
Bolt pattern (PCD): Number of studs and the diameter of the circle they sit on. It must match exactly.
Center bore: Diameter of the hub hole. Larger aftermarket bores need hub-centric rings.
Pressure: Recommended cold inflation pressure for that axle, in psi.
Staggered: A wider tire on the rear axle than the front. Front-to-back rotation is not possible.
Thread size: Lug bolt or nut thread — needed when buying aftermarket fasteners.