Concorde's landing gear is stalky because it has to attain a high angle of attack on take off and landing, due to having no high-lift devices on its wing. It follows the Comet (Pic. 4) and Britannia in having a four-wheel bogie, with the addition of carbon fibre brakes (very new in 1969) and cooling fans. The Vulcan (Pic 5) and the Victor had eight-wheel bogies with smaller diameter tyres, whereas the Valiant had two tandem wheels on each bogie to suit its slimmer wing. Concorde touched down at 150 knots (170 mph) and used reverse thrust as well as its brakes.
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