Helpp.....Skoda mk2 tyre size

[footie247]

hi all 

So i have a 2009 Skoda Octavia 1.8tsi model petrol. My current tyre size is 225 45 r17 as recommended, but like others on here hell yea the ride is un comfortable and i drive for a living so always going to areas with high level potholes (hate them)......................................been reading up on here and so my question is thus

 

if i opt to put on 225 55 r17 tyres, will that affect the speedo by any chance at all, i dont want to myself in jeopardy an accumelate any points on license as that would be a disaster to my life.

 

Any help/ assistance on this would be so so helpful

Regards

[PetrolDave]

6 hours ago, footie247 said:

My current tyre size is 225 45 r17

 

if i opt to put on 225 55 r17 tyres, will that affect the speedo

The higher profile will increase the diameter of the wheel. Since the speedo actually counts wheel revolutions your speedo will under-read as you'll be travelling further for each wheel revolution.

 

According to this tyre size calculator the speedo reading will be 6.8% lower, the recommended change is no more than 2%.

[inspectorman]

Go to 16 or even 15 inch wheels. Looks like you can have 205/55 16, 205/60 15 or 195/65 15.

[Carlston]

14 hours ago, footie247 said:

So I have a 2009 Skoda Octavia 1.8tsi model petrol. My current tyre size is 225/45R17 as recommended, but like others on here hell yea the ride is uncomfortable and I drive for a living so always going to areas with high level potholes (hate them)......................................been reading up on here and so my question is thus

 

If I opt to put on 225/55R17 tyres, will that affect the speedo by any chance at all, I don't want to put myself in jeopardy and accumulate any points on licence as that would be a disaster to my life.

 

Changing from 225/45R17 to 205/55R16 or 195/65R15 tyres, with suitable rims, will improve the ride comfort.

 

195/65R15 will give the best ride comfort and slightly better fuel consumption, but 205/55R16 will give slightly better cornering than the 15" option.

 

Alcar 9165 6Jx15 ET47 5/112 57.1 steel rim (Octavia MK2)

https://www.mytyres.co.uk/rims/details?vehicleId=183006013861926000&rimCode=ALCAR9165

 

Wheel trims for 6Jx15 ET47 5/112 57.1 steel rims CDZ600001 (Octavia MK2)

https://eshop.skoda-auto.cz/cs_CZ/poklice-castle-15/p/CDZ600001

 

Wheel trims for 6Jx15 ET47 5/112 57.1 steel rims 1Z0071435 (Octavia MK2)

https://eshop.skoda-auto.cz/cs_CZ/poklice-gaspra-15/p/1Z0071435

 

If you want to keep your current rims, perhaps they are 7Jx17 ET54, then summer touring tyres that are not overspecified, such as 225/45R17 91V, could help...especially if you currently have UHP (Ultra High Performance) summer tyres. UHP tyres tend to have stiffer sidewalls than summer touring tyres, so although UHP tyres have more cornering performance, the downside is a harder ride.

 

Michelin Primacy 4+ 225/45R17 91V (Euro label C A 69dB)

https://www.camskill.co.uk/m54b0s16p209569/Michelin_Tyres_Car_Michelin_Primacy_4%2B_225_45_R17_91V_TL_Fuel_Eff_%3A_C_Wet_Grip%3A_A_NoiseClass%3A_B_Noise%3A_69dB

 

Edited 1 September, 2023 by Carlston

[EnterName]

Have a mooch about on here.

https://www.tyrereviews.com/Search/Size/225-45-17

 

It's important to remember that different tyres can have quite different characteristics, on the same size wheel. Careful choice of replacement tyre may allow you to gain comfort without compromising other tyre characteristics you currently enjoy.

That site helpfully rates the different characteristics to allow you to make an informed buying choice. There is likely to be some margin of error, but it's a good place to start.

 

Bear in mind if you change your tyre width and profile, not only will you gain comfort, you will have to pay for that increased comfort by impacting other characteristics of the tyre.

If the only problem you have with your tyres and car handling is comfort, you may eliminate that one problem and inadvertently introduce a new problem by changing wheel size and tyre width and profile.