If you used a matching profile for the wheel+tyre combo, the speedo would not have been affected.I changed for 15in wheel to 16in several years ago only prob I found it knocks your speedo out but I just us the satnav speedo so no prob I was using 225 x 70 x 15in tyres I now use 225 x 75 x 16in with a load rating of 120/121 so much higher than standard.
If you get bigger tyres, you would usually get tyres with a lower profile in order to keep the same rolling circumference. Pros and Cons -Hi, I have a x290 comfortmatic with 15" wheels. i am thinking about changing them to 16" still the same pcd of 118mm.Has anyone done this and are there any negatives.The tyres are due for replacement anyway
Nah. Get the right wheel and tyre combo and it will read the same. If you get a bigger rolling circumference, it will read a bit higher. if you go too far you will be fouling the tyres on the van bodywork.the person who maintains the van reckons the speedo might be able to be recalibrated.I will have to give this some thought.
thanks for the replies
I found the same Ken .same speed less revs + for me the alloy wheel I fitted had a different offset giving me a 3in wider track and the tyre are know where near the bodywork or suspention .as part of upgrading the weight on mine i got the bigger wheels my speedo was always 7% out the bigger wheels corrected that fractionally better mph & on the whole a better driving experience but that may be more likely down to the air bags
The same van comes with 15" and 16" wheels so it shouldn't be a problem, my Speedo with 15" wheels is so far out that I look at the kph and divide it by two, so when it says 50mph it is actually 40mph,If you fit full size tyres watch they dont hit the inner gaurds on full lock, my car does this.
Since I've fitted these new tyres tezz my speed is spot on at 30 mph and two mph slow at 70 so not much to worry about really .The same van comes with 15" and 16" wheels so it shouldn't be a problem, my Speedo with 15" wheels is so far out that I look at the kph and divide it by two, so when it says 50mph it is actually 40mph,
your dash would drive me bonkers with all those leads snaking aroundIf you fit a dash sat speedo you can change from MPH to KILOMETERS if crossing the chanel or ireland.
Right hand side middle dash, handy tool, cost about 6/8 bucks.View attachment 75494
Handy to fix if anything goes wrong, one is for inside/outside temp, one for speedo, other for dash cam and new one this week for charging my phone running magic earth when dash clamp fixed beside s wheel right side.your dash would drive me bonkers with all those leads snaking around![]()
More MPG and less problems with potholes.Why on earth does one want to change to larger wheels?
Is there a performance advantage or is it just a vanity thing?
BIG WHEELS BIG TYRES LOVE THEM BETTER RIDE WHAT POT HOLESWhy on earth does one want to change to larger wheels?
Is there a performance advantage or is it just a vanity thing?