I’m based near: Durham
__many questions about tyres on here so here’s my tuppence worth.
Replaced today front bridgestones with Goodyear eagle F1
1 noticeably quieter
2 sharper turn in
3 good grip in the corners ( as you’d expect of new rubber)
Went for 215/45/17 weirdly cheaper for more rubber ? fill the wheel arch a little more .
At the price I think they are probably an upgrade on the bridgestones which I didn’t hate .
I’m impressed enough that I’ll be having some put on the rear in the next week or two .
Hope this is useful to someone .
Just did similar on my up! gti. Not sure really if it was a good thing. Jury’s still out.
Wouldn’t be surprised if your fuel economy suffers a bit. Mine’s definitely less, even though the new tyres (PS5) got a better fuel rating that the ones they replaced. More grip, wider tyres, aerodynamics, rolling resistance etc etc all comes into play. Whatever it is, I’m getting less mpg than before I changed them (and the weather’s warmer too).
The PS5’s I got weren’t cheaper than any of the players in the OE tyre size I could have got, as ‘cheaper’ seems to be at least a very common reason why people change size. If mpg turns out less, ‘cheaper’ will be wiped out depending on the size of the mpg penalty and how many miles are covered annually. Since I changed size on mine, routes with would see 60+ mpg on the info screen, now scape early 50s. Same routes, same traffic.
Yeah they seem good , but new rubber always does , being softer and more pliant , I’ll be able to say for sure once the rears are on , I’ve had the goodyears on other cars so I’m familiar with them and reckon there good comparing with , pirelli which I hated , Dunlop which were ok , Avon which were surprisingly grippy but wore quickly , Falken are cheaper but also id rate for grip .
So in summary the goodyears are a safe bet ,comfort ,quiet , grip well , pretty good in the wet , wear above average .
Mine did. 84p for the remaining 6 or so weeks until renewal, hence about £8 annually. No admin fee either. LV
The decision to change tyre size on my up! gti will cost me about £90-100 annually (mpg penalty over6 or so K miles, and insurance), for marginal,if any, gains.
I can’t believe that a tiny change in tyre size would affect the MPG by 20%? Unlikely. But don’t forget the car computer won’t be allowing for the difference of the new size so will be reading a tiny bit differently anyway.
Unlikely for the armchair, realty for those living it.
Only today a regular 60mpg journey had it on 52mpg., with literally zero traffic (granted not much is on this route anyway) VERY typical discrepancy since the change.
Not sure where your 20% come from
8mpg reduction, say, on a prior 60mpg value is a (Difference/prior)X100% = 13%
The real test will be dong the till receipt maths (miles travelled v litres needed to reach full again, and then the conversions) on upcoming fills, after the one I’m on, as that includes pre wider tyre miles. I’ve never got less than 50mpg, even in the depths of winter on the prior size. It’ll be interesting to see how the wider PS5 fare, given the weather is warmer now, too.
Ref the other poster who stated that he didn’t get the MX-5 for economy, just cornering, well, the change to slightly wider tyres (on the car mentioned) has made that not as good either
It’s not so much the mpg per se, but it’ll be ‘nice’ to work out how much changing from the OEM tyre size will, in reality cost annually, and hence for an expected tyre life. And compare to the common (albeit not always) ‘saves me a tenner a corner’ reason for changing
Frankly, I’m AMAZED you decided on a non-OEM tyre size for one of your cars, given your open (and ongoing) criticism of those who choose to do so on the MX-5.
For what it’s worth, I noticed no MPG difference going with a 215/45/17 on the NC2. That wasn’t from an armchair either.
You stated 60+ to low 50’s… I didn’t waste my time to do the math, I just took a close guess at 20%. The Math is actually 16%,so I wasn’t wildly out and a tiny change in wheel circumference will not make that difference. But since we are being pendents, how did you measure your milage for your calculations? The odometer calibration has now changed…
Hello,
Yes, I did an example from today returning 13% less.
And you’re correct, you’re 16% isn’t 20%. 16 and 20 of course being different numbers.
You claim it won’t make such differences, but again, from the armchair is different from the driving seat.
I haven’t measured mileage. If you read the post you’d see that didn’t state that I’ve done an accurate deduction via calculations. I have merely reported that for the same route, same roads, my mpg s noticeably less than prior on the OEM tyre size.
I apologies profusely if you find my slightly negative experience in changing tyre size from the manufacture’s value, using my own money do to do, highly offensive
Oh, and welcome to the forum, btw
Edit: Here’s a nice site I did some of my prior research on, ref speedo reading, revs per mile etc
To be on the safe side, in the likes of average speed camera etc, I do 1mph less
Hi,
Whilst it’s interesting what some people find amazng, I decided to change due to a) scant choice in the OEM tyre size (we’re on about an up! gti here), and indeed, the only real OEM tyre size I was (would have) stuck to was Yoko Advan Flevas, but those for some reason haven’t been available for ages, nor still aren’t (unless one uses mytyres, and no thanks on that one). I’m wondering if they’ve deleted them in that size. b) And internet heros seemed to allude that 205s were the next best thing (some even saying the best thing ). The size does/did allow a lot more choice of decent tyres, albeit more expensive, and not ‘save a tenner a corner’ jobs.
But for completeness, I don’t criticise people who do it, just wonder if there’s more to ‘save a tenner a corner’, as sooooo many posts/threads on this topic seem to have price as a primary reason.
My own experiences of actually doing it, and finding it hasn’t been the golden chalice, at least sheds some balance on it for observers to consider when making a choice
Finally, I’ve called myself a hypocrite on a prior thread for changing size. Do try and keep up with the forum
If you knew how much time, effort and expertise manufacturers put into selecting tyre sizes, etc. you wouldn’t mess with changes without expert guidance. And your insurance company needs to know too and could use it as an excuse not to pay out.
