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@isilentp avatar
UTC

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2020 Vespa GTS SuperTech 300 HPE
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UTC quote
So the manual (online/PDF) has recommendations for tire pressures for the 2020 Vespa GTS SuperTech 300 HPE. They are listed in "bars"--no problem, thanks to Google, I was able to convert bars to PSI. However, I don't know why Vespa has decided to only publish recommended tire pressures for riders who also have a passenger along for the ride. I searched the internet up and down without finding anything from Vespa about the recommended tire pressure (either in bars or PSI) for single riders.

This is somewhat frustrating [ Facepalm emoticon ], so I am coming here to this wonderful group to ask the question: Has anyone seen ANYTHING (preferably from Vespa) pertaining to recommendation on tire pressure for single riders?
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UTC quote
What does the label inside your glovebox suggest? A picture might be helpful, in case of mis-interpretation...
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UTC quote
iSilentP wrote:
So the manual (online/PDF) has recommendations for tire pressures for the 2020 Vespa GTS SuperTech 300 HPE. They are listed in "bars"--no problem, thanks to Google, I was able to convert bars to PSI. However, I don't know why Vespa has decided to only publish recommended tire pressures for riders who also have a passenger along for the ride. I searched the internet up and down without finding anything from Vespa about the recommended tire pressure (either in bars or PSI) for single riders.

This is somewhat frustrating [ Facepalm emoticon ], so I am coming here to this wonderful group to ask the question: Has anyone seen ANYTHING (preferably from Vespa) pertaining to recommendation on tire pressure for single riders?
As per manual:

Front tyre: 28 PSI Either single or double

Rear Tyre: 36 PSI Two up or single with luggage..

If you want to be comfortable by yourself:

28 PSI front

32 PSI rear

PS A single rider should be around 60-70 kg. Anything higher go 36 on the back
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UTC quote
jimc wrote:
What does the label inside your glovebox suggest? A picture might be helpful, in case of mis-interpretation...
Now why didn't I think of that? Checking now. Thanks!
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2019 GTS300 Supertech E3 60,000km
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UTC quote
Tire pressure in the Supertech manual pdf that i have show both with and without passenger

Front 1.8 with and without
Rear: 2.0 without, 2.2 with

I personally use 27psi front and 29 rear
Tires pressure
Tires pressure
⚠️ Last edited by SteelBytes on UTC; edited 1 time
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UTC quote
Thanks, for the info!
steelbytes wrote:
Tire pressure in the Supertech manual pdf that i have show both when and without passenger

Front 1.8 with and without
Rear: 2.0 without, 2.2 with

I personally use 27psi front and 29 rear
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2020 Vespa GTS SuperTech 300 HPE
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UTC quote
I saw that on the online manual, I will check the old fashioned paper manual as per prior response says it's in the paper manual.
steelbytes wrote:
Tire pressure in the Supertech manual pdf that i have show both with and without passenger

Front 1.8 with and without
Rear: 2.0 without, 2.2 with

I personally use 27psi front and 29 rear
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2020 Vespa GTS SuperTech 300 HPE
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UTC quote
So I checked the sticker in the glove compartment (Thanks, JimC). Below is the picture of the sticker along with the current tire pressure. I will make the necessary adjustments to the pressures in the morning. Thanks everyone for your help and suggestions.

This is for a 2020 Vespa GTS SuperTech 300 HPE.
Forum member supplied image with no explanatory text
Forum member supplied image with no explanatory text
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2020 Vespa GTS SuperTech 300 HPE
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UTC quote
Now I have!
NightWing wrote:
@sdg avatar
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Veni, Vidi, Posti
63 GS160 MK1 / GT60 / Sean Wotherspoon
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UTC quote
When it's hot season run them 26-30 when it gets colder run them at 27-32. I'm a reliable source promise.

SDG
@steelbytes avatar
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UTC quote
iSilentP wrote:
I saw that on the online manual, I will check the old fashioned paper manual as per prior response says it's in the paper manual.
interestingly that was from a PDF (1Q000743) I found online for the Supertech 300 (I think european?)

I just checked the manual (1Q000770) for my Supertech 300 (2019 asia pacific) and it has the following:

front 2.0 bar
rear 2.3 without and 2.6 with.

surprised that it's so different to the pdf and to your sticker .....
pressures
pressures
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UTC quote
The uncertainty continues. I just checked the paper manual (20210825_102438 - 0001 - Edition of the Paper Manual (01_03-2019 Cod 1Q000748 (US-FR-ES-PT)) and it is different than the sticker... Notice my manual is an older version than that of 'steelbytes'.

The inconsistency makes it very confusing, but I think the sticker is probably the one that is most applicable to the bike. Thoughts?
Tire pressures according to the paper manual (01_03-2019 Cod 1Q000748 (US-FR-ES-PT))
Tire pressures according to the paper manual (01_03-2019 Cod 1Q000748 (US-FR-ES-PT))
@jimc avatar
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The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
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UTC quote
It's also down to the rider's weight, and also their own preference for the 'feel' of the bike. Personally I use 200 mbar over the recommendation, so for single rider 2.0 bar front, 2.2 bar rear. Whatever that is in psi...
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UTC quote
I use what's recommended... Except when I don't. Razz emoticon (death-wobble mitigation=higher front psi)
26psi-front
29psi-rear
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UTC quote
Now I'm wondering what a "sparg plug" is. Razz emoticon
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UTC quote
fledermaus wrote:
Now I'm wondering what a "sparg plug" is. Razz emoticon
It's the tiny plug inside a standard spark plug that no one is willing to talk about...
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UTC quote
This is very quickly starting to look like an oil thread... ROFL emoticon

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UTC quote
Interesting, but I would not want to try this on a scooter.
Burt37 wrote:
This is very quickly starting to look like an oil thread... ROFL emoticon

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UTC quote
iSilentP wrote:
Interesting, but I would not want to try this on a scooter.
If you think that's bad, Aboriginal people are actually doing all the times with cars, but then again they don't ride on tarmac...

Watch the whole series, if you want to see the tyre bits...

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