Sorry To Be A Pain - Non T6 Tyre Advice

[Yogi]

I know there’s people on here that understand the technicalities of tyre/wheel sizes and I just need to have my mind put at rest

Here goes;
I’m helping my lad get a new car which will be a Peaugeot Active 2015 which comes with the gel puncture repair kit (a pet hate of mine). Tyre size given as 165/65/R15

We’ve got a Citroen C1 with a tyre size of 155/65/R14 and I’d like to know if the spare tyre wheel from the Citroen would be okay to use as a spare for the new Peaugeot

Regards

 

[Twenty Four]

I know there’s people on here that understand the technicalities of tyre/wheel sizes and I just need to have my mind put at rest

Here goes;
I’m helping my lad get a new car which will be a Peaugeot Active 2015 which comes with the gel puncture repair kit (a pet hate of mine). Tyre size given as 165/65/R15

We’ve got a Citroen C1 with a tyre size of 155/65/R14 and I’d like to know if the spare tyre wheel from the Citroen would be okay to use as a spare for the new Peaugeot

Regards

No, the Peugeot wheel is a 15" and the Citroen wheel is a 14".

 

[JonB]

it will be fine to use as a spare tyre as long as the wheel fits correctly and it’s used to get you off the side of the road and to a garage to get the original wheel fixed and refitted.
Most cars don’t have the same size spare.

Like the space saver Tyres which is no where near the same size, it’s just to get you safely off the hard shoulder and to a garage

 

[Dieseldonkey]

Construction and Use regs don't list different size tyres on same axle as an offence. Mixing different construction types, then yes that's illegal (Reg 26). But not different size. Space savers have an exemption subject to conditions, with respect to their construction.

However, it's an MoT failure if you present the vehicle for testing like this. You could also be subject to a delayed prohibition by VDSA or certain authorised Police Officers (normally traffic cops).

Delayed prohibition would still generally get you home though, if you were unfortunate enough to get stopped.

 

[MicP]

It might be ok for short distances as an emergency but it's about 6% difference which is 37 revolutions every km.
I wouldn't want to drive very far (at all if I could help it) lop sided with mismatched wheels and tires, who knows the effect this will have on the handing and control. Not only the size difference but the lop sided weight of the different wheel would have an impact too.
It's probably negligible but there would be increased wear on the differential too.