Brompton use a 16" wheel which now has a good selection of tyres to choose from.
The ETRTO is 35-349.
The ETRTO size specification indicates the width of 35mm and the tire inner diameter of 349mm.
Tyre weights found here.
Find here a list of suitable tyres for the OE wheel size;
Tyres 25mm;
Joseph Kuosac Strozzapreti Race Pro Folding 25mm
Tyres 30mm;
Schwalbe Winter 30mm
Tyres 32mm;
Brompton Kevlar 32mm
Schwalbe Kojak folding 32mm
Schwalbe Kojak wired 32mm
Tyres 35mm;
Continental Contact Urban 35mm
Schwalbe One Folding Tan Wall 35mm
Schwalbe Marathon Racer 35mm
Schwalbe Marathon Racer Folding Tan Wall 35mm
Schwalbe Marathon 35mm
Schwalbe Marathon Plus 35mm
Tyres 37mm;
Nexo Solid 37mm
Nutrak Siped Street 37mm
Raleigh Record 37mm
The ETRTO is 35-349.
The ETRTO size specification indicates the width of 35mm and the tire inner diameter of 349mm.
Tyre weights found here.
Find here a list of suitable tyres for the OE wheel size;
Tyres 25mm;
Joseph Kuosac Strozzapreti Race Pro Folding 25mm
Tyres 30mm;
Schwalbe Winter 30mm
Tyres 32mm;
Brompton Kevlar 32mm
Schwalbe Kojak folding 32mm
Schwalbe Kojak wired 32mm
Tyres 35mm;
Continental Contact Urban 35mm
Schwalbe One Folding Tan Wall 35mm
Schwalbe Marathon Racer 35mm
Schwalbe Marathon Racer Folding Tan Wall 35mm
Schwalbe Marathon 35mm
Schwalbe Marathon Plus 35mm
Tyres 37mm;
Nexo Solid 37mm
Nutrak Siped Street 37mm
Raleigh Record 37mm