Welcome Guest [Log In] [Register]
cheapivecoparts.co.uk

These forums are free and rely upon the goodwill of members to help and assist others. Any donations will be gratefully received.

You're currently viewing our forum as a guest. This means you are limited to certain areas of the board and there are some features you can't use.

Join our community!

If you're already a member please log in to your account to access all of our features:

Username:   Password:
Add Reply
Tyre size on a 35c15?; tyre size
Topic Started: Dec 15 2012, 10:29 AM (3,256 Views)
The Iron Works
No Avatar
Member
[ *  * ]
Just a quick question what size tyres should be on the rear of a 35c15 crewcab pickup?
Offline Profile Quote Post Goto Top
 
The Iron Works
No Avatar
Member
[ *  * ]
I have 195 75 on the rear at the moment but wondered if they are too small? The speedo seems to be several mph's out so clocking up the miles more than it should. Its doing 73mph on the satnav when the speedo reads 80mph.
Offline Profile Quote Post Goto Top
 
benno1976a
Member Avatar
Member
[ *  * ]
The Iron Works
Dec 17 2012, 09:45 PM
I have 195 75 on the rear at the moment but wondered if they are too small? The speedo seems to be several mph's out so clocking up the miles more than it should. Its doing 73mph on the satnav when the speedo reads 80mph.
195/65 16 on mine all round.... speedo on newest '61 plate shows about 2mph over sat nav, my '07 plate is about 7mph over sat nav and my '06 is spot on...

all mine have 195/65 16 and have had from new.

mine are normal chassis cabs not crew cabs, but I wouldn't think that makes a difference!! what size wheel is on yours?



Offline Profile Quote Post Goto Top
 
The Iron Works
No Avatar
Member
[ *  * ]
Mine are on 16" wheels too. Our transit crewcabs all have 185 75 16 so I was thinking the iveco may have the wrong size tyres on. Maybe not.

Its odd though, the wheels/tyres just look small inside the arches and yet the van looks so bulky. Maybe it is correct - just thought the speedo reading 7mph over what it should be was a little on the high side.

Is it possible to buy slightly taller tyres, if so what size would only be say 10mm taller. I can't seem to find 195 80 16 for sale
Offline Profile Quote Post Goto Top
 
radiotwo
No Avatar
Member
[ *  * ]
The Iron Works
Dec 18 2012, 08:56 PM
Mine are on 16" wheels too. Our transit crewcabs all have 185 75 16 so I was thinking the iveco may have the wrong size tyres on. Maybe not.

Its odd though, the wheels/tyres just look small inside the arches and yet the van looks so bulky. Maybe it is correct - just thought the speedo reading 7mph over what it should be was a little on the high side.

Is it possible to buy slightly taller tyres, if so what size would only be say 10mm taller. I can't seem to find 195 80 16 for sale
Hi Iron works

The 185 or 195 is not the height of the tyre its the width its the 75 or the 80 but that not a measurement as in mm or inches
its what they call the aspect ratio, and its a percentage, so ot would be 75% or 80%

use this calculator to work out your sizes:

http://www.kouki.co.uk/utilities/visual-tyre-size-calculator

Radiotwo
Offline Profile Quote Post Goto Top
 
The Iron Works
No Avatar
Member
[ *  * ]
Cheers matey,

That's a really usefull site, never knew it existed! This should make things really simple....
Offline Profile Quote Post Goto Top
 
benno1976a
Member Avatar
Member
[ *  * ]
You say 195/75 on rear??? Are fronts different?...

Also changing tyre size to make larger diameter will lift speed but it will effect acceleration as well... You are effectively changing the gearing. Not sure if this will effect you... May make a difference if you tow a trailer... Depends how much bigger you go?
Offline Profile Quote Post Goto Top
 
The Iron Works
No Avatar
Member
[ *  * ]
I rarely tow a trailer and with this truck have never done so as it doesn't have a tow bar, although going to fit one soon...If anyone has a second hand one they want to sell, please let me know :)

Usually only carry gates/railings etc so the weight is under a ton, just what we transport is large but not really that heavy.

I would like it to be geared up a little as it has plenty of grunt. Years ago I put over sized rear tyres on an old vw camper I had and it was great for cruising but not so good towing. But they were massive tyres with a small engine. In this case just having them 10 - 15mm high would make a reasonable difference I think.

I would have to do the front tyre too....
Offline Profile Quote Post Goto Top
 
Sudesh
Member Avatar
35s18
[ *  * ]
I'm on 225/65/16 all round. Speedo to NAV system in only 2mph difference.
Offline Profile Quote Post Goto Top
 
The Iron Works
No Avatar
Member
[ *  * ]
Using the link that radiotwo gave your wheels have the same rolling radius as mine which is 219.57cm. I wonder why the speedo is so far out?
Edited by The Iron Works, Dec 19 2012, 08:58 PM.
Offline Profile Quote Post Goto Top
 
1 user reading this topic (1 Guest and 0 Anonymous)
« Previous Topic · Iveco Daily 2006-2014 (previously 4th & 5th gen forums) · Next Topic »
Add Reply

These forums are free and rely upon the goodwill of members to help and assist others. Any donations will be gratefully received.