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01837 658081
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  1. Products
  2. Undercarriage Spares
  3. Tyres & Tubes
  4. Tyre Sizes Explained

Tyre Sizes Explained

General aviation tyres are generally Type III designs and include the most widely used sizes such as 5.00-5 and 6.00-6. These measurements refer to the section width of a tyre and also the rim ledge diameter (or the hole in the middle) hence a 6.00-6 is 6 inches wide and sits on a 6 inch wheel.

Three Part Name Sizes cover most of today’s designs and typically describe the Outside Diameter, Section Width and Rim Ledge Diameter. E.g. 15x6.00-6, the tyre is 15 inches tall, 6 inches wide and sits on a 6 inch wheel. Some tyres in this classification are preceded with an ‘H’ which identifies the tyre as having a higher percentage deflection.

Metric sizes are the same as three part name sizes but the Overall Diameter and Section Width are replaced with millimetres but the rim size remains in inches, e.g. 380x150-5, it’s imperial equivalent is a 15x6.00-5.

TypeTyre SizeOverall DiameterSection WidthWheel Diameter
Type III 6.00 - 6 - 6” 6”
Three Part Name 19.5 x 6.75 - 8 19.5” 6.75” 8”
Metric 380 x 150 - 5 380mm 150mm 5”

Stocking, processing
and delivering aerospace parts

Hello and welcome to our website. Contained within these pages is most of the information found in our printed catalogue, all available to order online! In addition you can search our entire inventory of over 125,000 part numbers.

Stock and pricing of all parts listed on this site is live, all prices exclude VAT and shipping. All orders are subject to our standard terms and conditions.

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Quality products
and easy ordering

All our stock is available for next day delivery. In addition we have distributorships for Aircraft Tool Supply, LP Aero Plastics, Falcon Gauge, Ceconite / Randolph and Shield Technology to name but a few!

We are also the UK and European distributor for Aircraft Spruce and Speciality, with whom we have been doing business with for over 25 years.

Should you ever need any further information then our experienced sales team are just a phone call or email away and will happily answer any questions you may have.