New tyres (again!)

[Basa]

Looking to replace 4 tyres as they are 7 years old but loads of tread left, no cracking etc
Tried Blackcircle , good price and are available but they have told me that as they source from many places they could not give me an idea of year of manufacture
Said some could be 5 years old but perfectly ok
Does this sound correct?
Are there any suppliers that give manufacturers year made data?

 

[ontheroadagain]

If you look at Michelin camper tyres (215-70-15) it says 109 load rating at 80 psi,

Michelin appear to have lowered this on some tyres within the last few years.
My Michelin camper tyres have a load rating of 116 at 475Kpa.
475Kpa is 69psi, so I see no reason why I should need to run them any higher than that.

 

[DDJC]

Michelin appear to have lowered this on some tyres within the last few years.
My Michelin camper tyres have a load rating of 116 at 475Kpa.
475Kpa is 69psi, so I see no reason why I should need to run them any higher than that.

Kpa?

I know PSI, and I know Bar. Never heard of Kpa? Some sort of metric thing?

 

[ontheroadagain]

Kpa?

I know PSI, and I know Bar. Never heard of Kpa? Some sort of metric thing?

Don't know. That's what is stamped on the tyre.

 

[ontheroadagain]

Just googled it -

kPa (Kilopascal) is a unit of measure in Europe and other areas that use the metric system.

^{_{Subscribers  do not see these advertisements}}

 

[DDJC]

Just googled it -

kPa (Kilopascal) is a unit of measure in Europe and other areas that use the metric system.

But Bar is already metric .
Why do we need a new metric measure?
On second thoughts, an argument for another day.

 

[eurajohn]

All tyre load ratings are based on maximum pressure. The received wisdom is that there should always be a 10% margin between actual weight and the rated weight. Typical load ratings for moho tyres are something between 116(1250Kg) and 121 (1450Kg) so both have a safety margin for a 2000Kg axle. The higher rating obviously allows you to run at a lower pressure than the lower one and still maintain a margin.

Those load ratings are only available on 16", 15" will typically be 109 for 215 and 112 for 225, also just noticed ref my original post the panel that advises 80psi also appears to downrate the speed to Q.

 

[Rapido925M]

My Mercedes handbook has a chart relating axle loads (as found on the weighbridge) to tyre pressure. The previous owner (a lorry driver) kept them at 80psi and the ride was very hard. I found the chart and changed to 45 (front) and 51 (rear) which has resulted in a smooth journey for over 15y with no problems.

Gordon

 

[Colin McCourt]

Are you sure that’s not the maximum permitted pressure?

Michelin state 5.5 bar on their tyres for the rear of a motorhome.

 

[scotjimland]

But Bar is already metric .
Why do we need a new metric measure?

It's not a new metric measurement..

The Pascal (Pa) is the metric unit of pressure in the International System of Units .. (Si)

kpa, or kilopascal It is commonly used in scientific and engineering applications

One kilopascal is equal to 0.01 Bar

^{_{Subscribers  do not see these advertisements}}

 

[DDJC]

It's not a new metric measurement..

The Pascal (Pa) is the metric unit of pressure in the International System of Units .. (Si)

kpa, or kilopascal It is commonly used in scientific and engineering applications

One kilopascal is equal to 0.01 Bar

Well its new to me.

 

[Rapido925M]

My local tyre fitters are suggesting Petlas: PT925 Full Grip is £102 fitted and has EU ratings of D (fuel), A (wet braking), 72 (noise). 112/110 R
However, Petlas (a Turkish manufacturer) classes them as passenger car tyres.

Broken Link Removed

Their recommended van tyres don't have my size and their biggest load rating (on 195, 65, 15) is 95 with C,C, 72 so obviously unsuitable.

Broken Link Removed

Any thoughts please?

Gordon

 

[scotjimland]

Well its new to me.

there ya go.. never to old to learn..

every day's a school day ..

 

[Lenny HB]

However, Petlas (a Turkish manufacturer) classes them as passenger car tyres.

The side wall will not be stiff enough on car tyres.

 

[Rapido925M]

On reflection I think they have mixed up their charts! The “car” tyres have load ratings of 110 etc and the smallest size is 15” whereas the “truck” tyres go down to 13” and have loads of 90ish even on 20” wheels

Gordon

^{_{Subscribers  do not see these advertisements}}

 

[Hettie's Crew]

Thought I’d add to this thread, rather than start another of the same title.
It feels like 3-4 years ago that I bought new tyres, turns out it’s nearly 7. I had a look at them today (Continental 4season’s) and the two rears are developing some cracking whilst the tread is virtually like new.
I won’t be rushing just yet to replace them but it’s got me wondering what to replace them with, I just know it won’t be CP’s.
Our local tyre place (Savoy) stock Lassa tyres that are a subsidiary of Bridgestone and I’ve got a Lassa Transway 2 as a spare so I’m thinking of going down that route, they have a Transway 3 now that has higher load rating of 116, in a 225/70 15, the highest I’ve ever seen is 112 on 15”. Only trouble is they’re not all season. The Lassa Mutiways-C is the all season one.
Has anyone got Lassa tyres on their motorhome that could offer comment. I’ve seen one or two French motorhomes with Lassa tyres on our EU travels.

 

[DoroDormobile]

The Autobild Allyear tyre test in 2022 of 225/75 R16 tyres ranked the Rotalla Setula Van 4 Season RA05 as good. Ranked #2 of 6.
https://www.autobild.de/produkttests/ganzjahresreifen-test-2022-225-75-r-16-c-21400253.html
There were some premium brands in its wake.

#	Name		Rating	Price
1.	Michelin Agilis CrossClimate		Test winner	£226 118 R + 1
2.	Rotalla Setula Van 4 Season RA05		Good
3.	Continental VanContact 4Season		Satisfactory	£205 121 R + 1
4.	GoodYear Vector 4Seasons Cargo		Satisfactory	£193 118 + 1
5.	Yokohama Bluearth VAN All Season RY61		Satisfactory
6.	Bridgestone Duravis All Season		Conditionally recommended

 

[Ralphey]

I think they may have the spying chips fitted ....

Haddock and spy chips...yesss

 

[DDJC]

The Autobild Allyear tyre test in 2022 of 225/75 R16 tyres ranked the Rotalla Setula Van 4 Season RA05 as good. Ranked #2 of 6.
https://www.autobild.de/produkttests/ganzjahresreifen-test-2022-225-75-r-16-c-21400253.html
There were some premium brands in its wake.

#	Name		Rating	Price
1.	Michelin Agilis CrossClimate		Test winner	£226 118 R + 1
2.	Rotalla Setula Van 4 Season RA05		Good
3.	Continental VanContact 4Season		Satisfactory	£205 121 R + 1
4.	GoodYear Vector 4Seasons Cargo		Satisfactory	£193 118 + 1
5.	Yokohama Bluearth VAN All Season RY61		Satisfactory
6.	Bridgestone Duravis All Season		Conditionally recommended

Nope, its Bridgestone Duravis All Seasons every day of the week for me. In the rain, nothing stops you faster and grips the corners better.
I had Michelin before and it was like driving on these

 

[Richard n Ann]

Grip isn't something I put to the test except in an emergency, which hasn't happened in 45k miles.
Now if i had a track day in the van I'd be selecting tyres very carefully