- Apr 10, 2019
Does anyone run 245s on their Cupra? Is their any advantage/disadvantage running the larger width tyres?
I thought the side wall would be the same being both 35, so this is good to know. I knew the tyre would be more bulbous in an 8j rim but didn't think there would be a sidewall size difference. Insurance isn't an issue as I'm going to change the rims in the near future hence asking if going 245 had any benefits, so I'd be informing the insurance anyway. Thanks for your help. Looks like I'm going to stick with 235s when I get my new rims going on what you've told me.Can help with your first question, but a few points to consider below.
On a 245/35 tyre, the sidewall will be slightly higher than on a 235/35 tyre, so depending on brand of tyre, you might experience a little more flex in the sidewall under cornering. The larger overall rolling radius would also mean a very small speedo error reading. There’s likely to be a price difference between a 245/35 and 235/35 tyre, but the wider/higher tyre won’t necessarily be more expensive than the factory tyres.
Fitting different sized tyres to factory spec tyres is also considered as a modification for insurance purposes in the UK, so you’d need to inform your insurer.
Thanks, this helps a lot as I never knew it was a ratio.Tire profile is basically the side wall aspect ratio to the tire section width. On a 235/35 tire the side wall height, measured from the wheel rim to the outside of the tread, is 35% of the section width. In this case 82.25mm.
This said the difference between the tire sidewall height on a 235 and 245 tire, both with a 35 profile, is 3.5mm. Hope this helps!
Yes, it’s as @onkkel has explained. Sorry I didn’t explain this in my earlier post or when you subsequently queried it - I’m currently out of the UK and the internet connection is very flaky to put it mildly, so logging onto the forum is a challenge!Thanks, this helps a lot as I never knew it was a ratio.