New tyres but different speed ratings

Tiggy777

Hi all

I recently had 2 new tyres fitted (recently purchased second hand car) and noticed today the speed ratings are different on the new tyres

My owners manual states the tyre should be a 215/55 R17 but the garage fitted 215/55 ZR17.

My primary concern if safety as I now have 3 ZR tyres and 1 R (front nearside)  (so it had a mix before!!!) I am searching online and read mixed messages. 
Also is this likely to fail an MOT.

Would be grateful for any advice please...car is a Nissan Juke 1.2 (2015)

Many thanks for any advice and for your time reading this.

Regards

Tiggy

matt_drummer

Are you sure the width is 255?

It sounds too wide so I looked it up, they should be 215/55 R17

Unless it is some special model?

Tiggy777

matt_drummer said:

Are you sure the width is 255?

It sounds too wide so I looked it up, they should be 215/55 R17

Unless it is some special model?

Matt, well spotted ...thanks.

Tiggy

Keep_pedalling

The Z speed rating is obsolete (replaced by (V, W &Y) the actual rating of your tyres should be at the end of list of codes. 

https://www.kwik-fit.com/tyres/information/what-is-a-tyre-speed-rating?gad_source=1&gad_campaignid=17735933490&gbraid=0AAAAAD_FFl_r3X-67nNgjLnZEPPUJhZJJ&gclid=EAIaIQobChMIt8qcxtrnkQMVeJNQBh1nKBhjEAAYASAAEgLjxPD_BwE

daveyjp

It won't fail an MOT, that only considers sizes.

Most tyre failures are due to neglect, foreign body or impact, rather than the construction.  Keep them inflated correctly, check for screws etc and on a 1.2 Nissan it is nothing to worry about as I doubt you will be reaching150mph.

 I would check the age of a ZR rated tyre.

paul_c123

Its not a fail. It would need to be a different size or different construction (ie mixing crossply and radial) on an axle, to fail. Its probably not recommended deep down somewhere in the manufacturer's recommendations, but this is another matter.

With it being a Nissan Juke, you have more serious concerns than the tyres!

matt_drummer

paul_c123 said:

Its not a fail. It would need to be a different size or different construction (ie mixing crossply and radial) on an axle, to fail. Its probably not recommended deep down somewhere in the manufacturer's recommendations, but this is another matter.

With it being a Nissan Juke, you have more serious concerns than the tyres!

Do the front fog lights work!

Most of them seem to need them on at all times!

daveyjp

paul_c123 said:

Its not a fail. It would need to be a different size or different construction (ie mixing crossply and radial) on an axle, to fail. Its probably not recommended deep down somewhere in the manufacturer's recommendations, but this is another matter.

With it being a Nissan Juke, you have more serious concerns than the tyres!

Especially if its a CVT auto.

Mildly_Miffed

Tiggy777 said:

Hi all

I recently had 2 new tyres fitted (recently purchased second hand car) and noticed today the speed ratings are different on the new tyres

My owners manual states the tyre should be a 215/55 R17 but the garage fitted 215/55 ZR17.

My primary concern if safety as I now have 3 ZR tyres and 1 R (front nearside)  (so it had a mix before!!!) I am searching online and read mixed messages. 
Also is this likely to fail an MOT.

Would be grateful for any advice please...car is a Nissan Juke 1.2 (2015)

Many thanks for any advice and for your time reading this.

Regards

Tiggy

There won't be a tyre that is JUST R.

Look further on the sidewall markings. The speed and load ratings may well be separate - so something like 92W

A speed rating that's above the minimum required for the car is not an issue.

Tiggy777

Hi all

Thanks for all the various helpful comments.

Based on the various posts I have looked again and now think I have found the correct speed rating for each tyre which I don't think I fully understood in my opening post

So driver side Rear is 94 W and front is 94 W
Near side is Rear is 98 W and front is 98 V

Also attached the sticker from into the car door.

My mind is so confused any further advice (on the mix) would be gratefully received.

Thank you.

Tiggy

Mildly_Miffed

That sticker says that 215/55 17 tyres with at least 94 load rating (670kg per tyre) and at least V (149mph) or W (168mph) speed rating are the original spec, 2.5 bar pressure in the front, 2.2 bar in the rear.

215mm tread width
55% of 215mm sidewall height
17" rim diameter

You have 2 x 94W, 1 x 98W, 1 x 98V. All are perfectly adequate and appropriate.
The 98s will be a little harsher ride, being XL rated for heavier loads (750kg/tyre).
The speed rating is irrelevant, since I doubt your Up! is capable of anything remotely close to 149mph...

BTW, your Up! probably weighs around a ton empty, with 1300kg maximum laden weight - so even 94-rated 670kg/tyre is way higher than is ever going to be an issue...