4 such tyres at 29 psi can support a gross weight of 1580 kg .

At 34 psi , they support a gross weight of 1800 kg .

So you are fine with 34 psi , if ride isn't harsh for you .

I would personally give 36 psi a try , for fuel economy .

Note: Your car tare (empty) weight is probably around 1000 kg .

Front axle of typical Japanese passenger car like this is likely to carry more load than rear .

Attached below is a load table applicable to you , namely



Minimum tyre pressure of 2.0 bar is 200 kpa which is also equals to 29 psi .



The speed rating T means this tyre is designed for speed 190 km/hr at a tyre air pressure of 270 kpa aka 39 psi .

Add :



This post has been edited by zeng: Nov 7 2020, 09:55 PM

TS Dunlop tyre each has a load capacity of 395 kg per tyre at 200 kpa and 415 kg per tyre at 210 kpa .

Hence , a total load capacity of 4 X 395 kg = 1580 kg at tyre pressure of 200 kpa for all 4 tyres , or 415 kg X 4 at tyre pressures of 210 kpa .

The spec does not provide for load capacity at tyre pressures lower than 200 kpa .

Nope , this table from TRA/USTMA is meant for P175/70R13 i.e tyre for American market .
TS Dunlop SP Sport J5 175/70R13 (Without prefix P) is meant to comply with European spec ETRTO .

This post has been edited by zeng: Nov 8 2020, 11:42 AM

Dunlop designs your tyre for a load of :
a ) 395 kg at (minimum cold) air pressure of 200 kpa ;
b ) 415 kg at ............................................210 kpa ;
c ) 430 kg at ............................................220 kpa ;
d ) 445 kg at ............................................230 kpa ;
e ) 460 kg at ............................................240 kpa ; and
f ) 475 kg at .............................................250 kpa ,
all of above which with a limit of maximum road speed at 160 km/hr .

Beyond 160 km/hr road speed , Dunlop designs this tyre for higher road speed up to a maximum road speed of 190 km/hr at a cold tyre air pressure of 270 kpa aka 39 psi as per table above .

At maximum allowable cold air pressure of 44 psi , Dunlop is expressly silent on its load capacity IMHO .

Hence 475 kg load capacity is at designed minimum air pressure of 250 kpa aka 36 psi and above .

This post has been edited by zeng: Nov 8 2020, 12:07 PM