Technical Tyre recommendations please

[tinmar49]

The Fiat recommended sizes are clearly shown in the handbook, and if anyone recommends another size, saying it's ok with the insurance companies, they are talking BO---CKS. The insurance companies check these things in the event of a crash, anything to avoid paying up, do you feel lucky?

 

[koalar]

Moving away from the insurance debate

Michelin recommend changing the wheels from 5Bx13 ET41 to 5Jx13 ET38

We know the tires physically fit but how well.



http://www.tyresizecalculator.com/wheels/wheel-rim-profiles

It would make sense to me to change the rims to a J bead profile if fitting 175 profile tire.


I know very little about bead profiles. In fact I didn't even know that the Fiat 13" wheels use a fairly obsolete bead profile. Now I understand why there is limited choice in the 155 size

 

[A3jeroen]

Are we sure the B isn't a typo? AFAIK all modern rims are Jshape. Same width, but lower offset. Maybe to prevent rubbing against the suspension?
Or to be able to mount snowchains.

gr J

 

[Stavros2]

5Jx13 ET38 these ARE the rims i have fitted to my 2009 eco!
Once again, they are the correct rims for my 175/70/13 tyres.
I have checked and checked again!
I wont post again because we will simply have to agree to disagree, you think you are right, i know i am right

 

[koalar]

Like I said the bead profile is all new to me.

Jack the car up. Taken the wheel trim off and I have.

5Bx13 ET35

Part number 4450

https://cdn.tiresleader.com/static/img/auto/certificates/ga/A05/366-2013-95-WIRD-N47-4450-8-001.pdf


Or


https://www.tyreleader.co.uk/steel-wheels-5bx13-et35-4x98-58-h-19894?car=12587

Left hand side compatible tyres


Still a B but not the ET Michelin quoted


If you buy 155 width tyres on new steel rims then they are B rims


http://www.ebay.ie/itm/4x-steel-wheels-FIAT-Panda-169-155-80-R13-79T-Nankang-all-season-/132243743383?hash=item1eca576297:g:GHEAAOSw2s1UrSOV


Check a few other listing. Any that are 155/80R13 on steel wheel are on "B" rims regardless of tyre manufacture. Anything larger is on "J" rims.



https://www.tyreleader.co.uk/steel-wheels-5bx13-et35-4x98-58-h-19894?car=12587

Left hand side compatible tyres

 

[koalar]

Are we sure the B isn't a typo? AFAIK all modern rims are Jshape. Same width, but lower offset. Maybe to prevent rubbing against the suspension?
Or to be able to mount snowchains.

gr J

Physically checked mine. In the rain :bang:


You can try yourself online here https://www.oponeo.co.uk/steel-wheels


As far as I can see. If it had 155/80 it has to be a "B" rim. 155/80R13 are only made as a "B" .


I can't find a 13" rim on a Panda that's anything other than a "B" except on eBay listings. Maybe Fiat made some versions that had 13" wheels and a wider tire at the factory. I don't know.

All 14" rims are "J"

 

[A3jeroen]

A new thing learned today. B is an old shape still used on small cars with narrow tires. (AKA Panda)

gr J

 

[Stavros2]

Tyres with
minimum tyre width
for wheel: 5x13
155/65R13155/70R13155/80R13Tyres with
ideal tyre width
for wheel: 5x13165/55R13165/60R13165/65R13165/70R13165/75R13165/80R13175/50R13175/55R13175/60R13175/65R13175/70R13175/80R13Tyres with
maximum tyre width
for wheel: 5x13185/55R13185/60R13185/65R13185/70R13185/80R13

 

[koalar]

There does appear to be some crossover with some tires

Approved rims for Eibach snow tyres

155/70R13 75T 4.00B, 4J, 4.50B, 4½J, 5.00B, 5J,
175/70R13 82T 4.50B, 4½J, 5.00B, 5J, 5.50B, 5½J, 6.00B, 6J


Very hard to find data on a lot of brands.

 

[koalar]

A new thing learned today. B is an old shape still used on small cars with narrow tires. (AKA Panda)

gr J

That's how I read it.

I also learnt something new.