T32 20" Tyres - What Do You Use?

[temporarysecretary]

This will address you tyre pressure needs :

20” Tyre Pressure

Hello all On 275/35 and 265/40 applications we’ve always gone with and recommended 40psi all round. Recently we’ve been experimenting with different pressures. We’ve had two t32 Kombi s running Bilsteins and 265/40, one on 36psi and the other on 40psi. Both have covered 12000 in a year. The...

www.t6forum.com

With regards to size. That size technically too big but I run it and it's fine. Certainly better than 275/40 my wheels came with.

 

[Bigsidavies]

I run 245/45 on the front and 275/40 on the rear as I have staggered wheels. The 245 are perfect on 8.5j wheels.
I’m running 38 psi and they wear evenly (since my hunter realignment).
You might struggle to get other profiles for a T32 as, like me, you require 103 load rating or above.

 

[jadatis]

48 psi seems high to me too.

Are tire worn out because of centrewear? Then lower pressure gives more even wear, but more fuelconsumption, but better comfort and gripp. Slipping tires because of low gripp wear tires out faster.

Pressure determination is to give the tire a deflection, that wont overheat any part of the tire-material, driving the speed constantly for wich it is determined.

This deflection is made by the pressure/load on tire relation.

I estimate that for normal loading and speed 99mph or lower, your tires can do withsomething in the 20s psi.

Can make you a cold pressure/axleloadcapacity list for your old and new tires.

Then you " ONLY" have to determine the axleloads in your use 99% acurate, the most tricky part, and your responcibility.

As long as you did not have acurate axleloads, you can look back the GAWR's in my list, assuming you never overload the axles, and dont drive faster then 99mph, not even for a minute.

The 103 loadindex stands for maxload 875 kg / 1930 lbs and your size most likely XL, then maxload is given for referencepressure 2.9 bar/42 psi, and speed 160kmph/ 99mph. Searched with google and is XL.

Made list for that with maximum reserve at wich comfort and gripp is still acceptable.

For that I give 90% of calculated axleloadcapacity for the cold pressure.

Behind cold psi in kg and in front in lbs

Axleload/cold psi/axleload
1634 lbs/ 18 psi / 741 kg
1713 lbs/ 19 psi / 777 kg
1791 lbs/ 20 psi / 812 kg
1869 lbs/ 21 psi / 847 kg
1946 lbs/ 22 psi / 883 kg
2024 lbs/ 23 psi / 918 kg
2101 lbs/ 24 psi / 953 kg
2179 lbs/ 25 psi / 988 kg
2256 lbs/ 26 psi / 1023 kg
2332 lbs/ 27 psi / 1058 kg
2409 lbs/ 28 psi / 1093 kg
2486 lbs/ 29 psi / 1127 kg
2562 lbs/ 30 psi / 1162 kg
2639 lbs/ 31 psi / 1197 kg
2715 lbs/ 32 psi / 1231 kg
2791 lbs/ 33 psi / 1266 kg
2867 lbs/ 34 psi / 1300 kg
2943 lbs/ 35 psi / 1335 kg
3019 lbs/ 36 psi / 1369 kg
3095 lbs/ 37 psi / 1403 kg
3170 lbs/ 38 psi / 1438 kg
3246 lbs/ 39 psi / 1472 kg
3321 lbs/ 40 psi / 1506 kg
3396 lbs/ 41 psi / 1540 kg
3472 lbs/ 42 psi / 1575 kg/ reference-pressure
3547 lbs/ 43 psi / 1609 kg
3622 lbs/ 44 psi / 1643 kg
3697 lbs/ 45 psi / 1677 kg
3772 lbs/ 46 psi / 1711 kg
3846 lbs/ 47 psi / 1745 kg
3921 lbs/ 48 psi / 1778 kg
3996 lbs/ 49 psi / 1812 kg
4070 lbs/ 50 psi / 1846 kg
4145 lbs/ 51 psi / 1880 kg/ often given maxcold pressure.

 

[993porky]

Thanks for replying everyone it’s a big help and gotta say this forum never fails always help and advice given when needed

 

[993porky]

Hi everyone
I’m after some advice regarding tyre size best for 20” wheels, my van is a t32 with coil overs lowered about 60mm. When I bought wheel and tyres last year the advice from the company I purchased wheel/tyre package from was to go for 245/45/r20 103 rated,now I’m reading and watching YouTube and especially THQ recommend 265/40/r20
But when I call tyre places in and around Durham they all tell me that is wrong and should be 275/40/r20 so what are the recommendations on here any advice appreciated do I go for
245/45 as already have them
Or
265/40 as THQ
Or
275/40 as everyone else on YouTube ie Steve Field, dubventures etc
Totally confused myself also seen a van similar to mine on 20” LEIGHTON alloys running the 275’s
Thanks hopefully will get some advice from the forum picture is mine now

 

[charley91]

Sorry for hijacking into this post but looks as most relevant a thread for me to pose a question on the forum. I've got a set of vw alloys that I'm advised tyre size 270 40 r20. Quite keen on the off road style tires (goodrich, toyo etc.) But seems closest they do are 265 50 r20. Wondering whether anyone has any experience similar to this scenario and hopefully can advise. I was given the alloys that came off an old transporter, so hoping should be all good. Appreciate any recommendations.

 

[jadatis]

265/50 R20 needs ideal rimmwidth 8.5 inch.
Allowed between 7.5 inch and 9.5 inch.

270/40R20 measure rimm ,ideal 9.5 inch rimmwidth, and between 9 inch and 10.5 inch allowed.

So search for rimmwidth on the rimms, to see what is possible.

Ofcource it also have to fit , so touches nothing, also when steering.