help!! any ideas what size tyres theses are??

hi guys, hope someone can advise me. Iv just got myself my first landy 109 FFR. Im looking to change the wheels and came across this company in the sates that customises land rovers. could anyone take a look at this link and see if they have any idea what wheels/tyres are on this 109. 1983 LAND ROVER SERIES III 109”
thanks for your help