MGB Tire Pressures


MG MGB Dutch Brochure

MG MGB Dutch Brochure


MG MGB on Borrani Wheels

MG MGB on Borrani Wheels

MGB Tires

There are two good tire options for the MGB. It is worth mentioning that MG chose to fit their MGB and MGB GT model cars with a 165R14 tire. They could have fitted wider, lower profile tires from 1968 onwards but they chose not to because the car handled at its best fitted with a 165 section tire.

We would suggest that the best tires would be the 165HR14 Pirelli Cinturato CA67, which was the original equipment. However the Michelin 165 HR 14 XAS is also an excellent period tire that will work well at high cruising speeds on dual carriage ways.

Many people will want to fit a wider tire of which we would strongly recommend not going any wider than 185/70VR14. And the best tire would be 185/70VR14 Pirelli Cinturato CN36, because the tire carcass is designed to work alongside a chassis design like the MGB. If you go lower profile than 70 profile then you should not fit inner tubes. And anything wider the 185 will spoil the handling.


MGB V8 Tires

Tire recommendation for the V8 version of the MGB is simple. Michelins 175HR14 XAS is the perfect tire for the MGB V8. A larger section tire will not handle as well.


MG MGB at Longstone

MG MGB at Longstone

MGB Innertubes

Wire wheels were always fitted with innertubes in period. The rim itself is not sealed, because the spoke heads come through the rim. This is not just on the MGB and the MGB GT. All cars fitted with wire wheels fitted innertubes. Today there are wire wheels built that profess to be tubeless, however in our experience these wheels often fail, and we always fit innertubes in wire wheels. Regardless of weather you have an MGB GT or the roadster MGB fitted with wire wheels we strongly suggest fitting a good innertube, we suggest the Michelin 14D, which can be bought through the innertubes link above.

However, in the case of the MGB, they did primarily fit innertubes on cars, fitting 4"X14 or 4.5"X14 Rostyle wheels as well as the wire wheels, all needing an innertube. Today's premium 165R14 tires are made as tubeless tires, but this simply means they can be fitted tubeless on a wheel that is suitable to be used without an innertube.

As you can see from the1974 Michelin tire fitment guide, all of them are listed as requiring inner tubes. Although the MGB GT V8 has the 5" rim and is tubeless, the Dunlop installation guide indicates that all MGB and MGB GT need inner tubes. Although smaller rims should accommodate inner tubes, the later 1977 Michelin fitting guide also confirms that the 5" wide wheel had a tubeless rim.



MGB Wire Wheels

Wire wheels were fitted on some MGB models, and Longstone is fortunate to work with the finest in the industry. Throughout the years, Ruote Borrani Milano has provided wire wheels to a variety of well-known automakers, including Jaguar, Ferrari, and Aston Martin. Borrani outperforms all other wire wheel producers in several ways. Borrani wheels are one-quarter the mass of steel wire wheels due to their aluminium rims, and they are manufactured in Italy to the highest quality standards. Borrani wheels are the best way to dress up your MGB, and will add to the classic look. Visit their website by clicking the Borrani link at the top of the page.


MGB Fitment & Pressure Guides


MGB Tire Pressure Recommendations

Tire Front Rear
165HR14 PIRELLI CINTURATO ™ CA67 28 32
165HR14 Michelin XAS 28 32
185/70VR14 PIRELLI CINTURATO ™ CN36 26 30

MGB GT Tire Pressure Recommendations

Tire Front Rear
165HR14 PIRELLI CINTURATO ™ CA67 28 32
165HR14 Michelin XAS 24 28
185/70VR14 PIRELLI CINTURATO ™ CN36 26 30

MGB V8 Tire Pressure Recommendations

Tire Front Rear
175HR14 Michelin XAS 28 32

MGB Tire Pressure & Fitment Guides


1974 MGB car Tire Pressures by Michelin

1974 MGB car Tire Pressures by Michelin

1977 MGB car Tire Pressures by Michelin

1977 MGB car Tire Pressures by Michelin

1978 MGB car Tire Pressures by Dunlop

1978 MGB car Tire Pressures by Dunlop

MG MGB Poster

MG MGB Poster