Tyre pressure for Bridgestone 235/55/19 101 V

[HSDish]

Got Bridgestone 235/55/19 101 V on our RAV 4 PHEV and for now there is 2.9 tyre pressure butI think that seems a bit much.

Is that really correct?

[FROSTYBALLS]

UK specs - see:

https://mag.toyota.co.uk/toyota-tyre-pressure-and-size-guide/

[HSDish]

8 minutes ago, FROSTYBALLS said:

UK specs - see:

https://mag.toyota.co.uk/toyota-tyre-pressure-and-size-guide/

Acording to that the pressure at our tyres are to high.

Got 2.9 bara and The recomended pressure seems to be 2.3

[philip42h]

Don't forget to reset the TPWS warning level after you have carefully adjusted all four tyres to the correct pressure ...👍

[HSDish]

5 minutes ago, philip42h said:

Don't forget to reset the TPWS warning level after you have carefully adjusted all four tyres to the correct pressure ...👍

Thanks.

I'll think a bout that.

The strange thing is that there was a professional tyre garage that fited/ mounted the tyres 

Thought they would know

[FROSTYBALLS]

22 minutes ago, HSDish said:

The strange thing is that there was a professional tyre garage that fited/ mounted the tyres 

Thought they would know

Wouldn't rely on that. 

[ernieb]

I now specifically ask the dealers when the car is serviced to not change the tyre pressures even when they move the tyres around.  They have been absolutely all over the place in the past.

I usually do mine early in the day when my car is not in direct sunlight so the tyres temperatures are pretty even.

[Hybrid21]

I have my RAV4 tyres at 230kpa/33.5psi

I find it particularly sensitive to tyre pressures and 290kpa is far too high, over 40psi !!  😲

[AndyN01]

10 hours ago, HSDish said:

Thanks......there was a professional tyre garage that fited/ mounted the tyres 

Thought they would know

"Professional" simply means that someone gets paid for what they do.

It doesn't mean they are skilful, careful, correct or competent. If you find one that is, that delivers solid, reliable service then be grateful and accept that they'll be a few £££ more than their "rivals" because of their attitude and skills.

Andy.

[Hybrid21]

That's why after a service I always check the tyre pressures, wheel tightness, fluid levels, especially oil level, and bodywork, etc for damage.

Most people don't as they trust the "professionals" 🙂

 

[Roy124]

13 hours ago, philip42h said:

Don't forget to reset the TPWS warning level after you have carefully adjusted all four tyres to the correct pressure ...👍

Although if the pressure settings were correct before they were overpressured then the TPWS should not send an error.

Agree though, after PDI I had to reduce the pressures to the correct values and that then threw up a warning. 

[philip42h]

2 minutes ago, Roy124 said:

Although if the pressure settings were correct before they were overpressured then the TPWS should not send an error.

Agree though, after PDI I had to reduce the pressures to the correct values and that then threw up a warning. 

Exactly so, and likewise ... 🙂

From the earlier posts I had assumed that might be the same for Kenth not appreciating that he had recently had is tyres replaced (I now think). But as soon as one starts doubting the sanity of the world it does no harm to set things right if one can. 😉

[Flatcoat]

4 hours ago, Hybrid21 said:

That's why after a service I always check the tyre pressures, wheel tightness, fluid levels, especially oil level, and bodywork, etc for damage.

Most people don't as they trust the "professionals" 🙂

 

Similar, I dont do wheel nuts but always check the others. The oil as much to ensure it is not overfilled. 

[HSDish]

Talked to the tire company that inflated and installed the tires. The company is established and feels serious and it has helped me in a good way in the past. Se collaborates and is next door to my local Toyota workshop.
The staff at the tire company says that there should be 2.9 bar in those tires. Local Toyota workshop recommends 2.6 bar and owner's manual recommends 2.3 bar.
Thinking of going a Swedish "lagom" way and dropping out to 2.6

Was on a trip with two adults, three grandchildren and full packing this week and is goint to a trip with, three adults and full packing again next week so...
Is it perhaps good to keep the high 2.9 pressure until we get back?

[ernieb]

10 hours ago, HSDish said:

Talked to the tire company that inflated and installed the tires. The company is established and feels serious and it has helped me in a good way in the past. Se collaborates and is next door to my local Toyota workshop.
The staff at the tire company says that there should be 2.9 bar in those tires. Local Toyota workshop recommends 2.6 bar and owner's manual recommends 2.3 bar.
Thinking of going a Swedish "lagom" way and dropping out to 2.6

Was on a trip with two adults, three grandchildren and full packing this week and is goint to a trip with, three adults and full packing again next week so...
Is it perhaps good to keep the high 2.9 pressure until we get back?

The higher pressures must affect the ride quality??  I've always found the higher the pressures the ride gets very hard and bouncy, certainly feel more of the pot holes here in the UK.

[TonyHSD]

Best to stay close to the label on the door. 2.3 bar you can easily run them between 2.25 bar to 2.35 bar. Anything below or above will of set the car efficiency, handling and comfort levels.
When tyres are over inflated they also lose grip and increase stopping distance in an emergency braking. Comfort is totally lost, cabin noise also increases. Keep them around 2.3 bar is the best option. I keep mine usually at 2.35 as this is checked in the morning on cold but I do drive at night and the temperatures are even lower. During the day and because of the sun the pressure can go up 2.4 and more bars but then it will go down with sun goes down. The best way of check tyre pressure is at home with good quality pressure gauge in the morning before driving off and before the sun sees the car. 👌

https://www.ebay.co.uk/itm/285046923458?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=2fWrzZ2QSjK&sssrc=4429486&ssuid=p34UK1z2T4m&var=&widget_ver=artemis&media=COPY

[AndyN01]

Oddly enough my (elderly) neighbour asked me to check their car yesterday. He was saying it was very bouncy/harsh and just didn't feel right.

And, sure enough, they were well over the recommended pressure and not even all the same. It had been "fully serviced and checked" by the selling dealer.

Enough said.

Andy.

[Flatcoat]

It is very rare the car manufacturers figures need adjusting. 2.9 bar is not only above the figure Toyota recommend, but high to the extent it could adversely affect grip especially on wet or icy roads. 

[Vainona70]

HSDish, which Bridgestone tyres did you have fitted? I doubt that it makes a different, but just interested.

The recommended pressures for the OEM Bridgestone Alenza 235/55 R19s on my HEV are 2.3 Bar (33psi) as previously mentioned. 

[HSDish]

On 8/5/2023 at 4:24 PM, Vainona70 said:

HSDish, which Bridgestone tyres did you have fitted? I doubt that it makes a different, but just interested.

The recommended pressures for the OEM Bridgestone Alenza 235/55 R19s on my HEV are 2.3 Bar (33psi) as previously mentioned. 

Thats the same tyres that we got on our PHEV 

[FROSTYBALLS]

Regardless of what the tyre fitting company say, Toyota and Bridgestone would both have been involved in deciding the tyre pressures for your car, and also have spent a fair amount of money testing, to ensure the recommended pressures are safe. So why go away from the manufacturer settings.

What are the tyre fitting company basing their recommendation on? Guesswork?

[HSDish]

40 minutes ago, FROSTYBALLS said:

Regardless of what the tyre fitting company say, Toyota and Bridgestone would both have been involved in deciding the tyre pressures for your car, and also have spent a fair amount of money testing, to ensure the recommended pressures are safe. So why go away from the manufacturer settings.

What are the tyre fitting company basing their recommendation on? Guesswork?

They say they have seen tyres with to much worn in and outsides and even deformed rims caused by  the recomended 2.3 bar preassre

[George22]

On 7/30/2023 at 7:05 AM, ernieb said:

I now specifically ask the dealers when the car is serviced to not change the tyre pressures even when they move the tyres around.  They have been absolutely all over the place in the past.

I usually do mine early in the day when my car is not in direct sunlight so the tyres temperatures are pretty even.

I wasn’t aware they moved the tyres around at servicing, I will ask if mine are done next time. 

[FROSTYBALLS]

At the end of the day, it is your choice whether to go by the vehicle manufacturer's pressures or not. I would trust the manufacturers settings, but hey-ho do what you want ......

[AndyN01]

Taking things to the extreme.....

What do you think your Insurance Company will do in the event that there's a serious accident (i.e massive ££££'s compensation) and they find out that your tyre pressures are not what the manufacturer recommended and that contributed to the accident?

Andy.