A place for more technical discussions. Please make sure you post in the correct section on the site, this way it keeps the site tidy AND ensures you get a more relevant answer.
Tyre size 195/80/15 or 215/80/15
03 May 2014 23:12 #114071
by kirkynut
The underdog often starts the fight, and occasionally the upper dog deserves to win - Edgar Watson Howe.
My Jimny Thread Here: www.bigjimny.com/index.php/forum/8-my-ji...on-continues?start=0
Replied by kirkynut on topic Tyre size 195/80/15 or 215/80/15
I run extreme MT tyres in the form of Malatesta Kaimans in 215/80/15's which do come up big because they are extreme pattern tyres and re moulds. However, I have a 3" lift, no wheel arch liners, a winch bumper and extended rear bump stops along with folded front wheel arches. That lot stops the tyre rubbing. Just!
Kirkynut
Kirkynut
The underdog often starts the fight, and occasionally the upper dog deserves to win - Edgar Watson Howe.
My Jimny Thread Here: www.bigjimny.com/index.php/forum/8-my-ji...on-continues?start=0
Please Log in or Create an account to join the conversation.
- Young Pretender
- New Member
-
Public
Less
More
- Thank you received: 0
10 Mar 2018 01:21 #190204
by Young Pretender
Hi Kirkynut
Sorry bit of a thread revival here. When running 215/80/15 MTs have they given rise to a need to change the gearing or CVs?
Trying to research if I can run these tyres with just lift/cutting and to what extent I would be compromising performance by not changing the gearing specifically. I can live with some compromises but don’t want to render the car useless off road of course
Cheers
Replied by Young Pretender on topic Tyre size 195/80/15 or 215/80/15
kirkynut wrote: I run extreme MT tyres in the form of Malatesta Kaimans in 215/80/15's which do come up big because they are extreme pattern tyres and re moulds. However, I have a 3" lift, no wheel arch liners, a winch bumper and extended rear bump stops along with folded front wheel arches. That lot stops the tyre rubbing. Just!
Kirkynut
Hi Kirkynut
Sorry bit of a thread revival here. When running 215/80/15 MTs have they given rise to a need to change the gearing or CVs?
Trying to research if I can run these tyres with just lift/cutting and to what extent I would be compromising performance by not changing the gearing specifically. I can live with some compromises but don’t want to render the car useless off road of course
Cheers
Please Log in or Create an account to join the conversation.
- 1066Boy
- New Member
-
Public
Less
More
- Thank you received: 0
10 Mar 2018 06:38 #190213
by 1066Boy
Replied by 1066Boy on topic Tyre size 195/80/15 or 215/80/15
Hi Mark
I am running 215/75/15 Grabber X3's on standard gearing and its fine. On long hills you have to change down a little earlier but apart from that its fine. They will fit on a standard Jim but mine is on a 2" lift. Actual size will depend on the tire. tread pattern, remould/or new etc. I think mine are around 28"
Allan.
I am running 215/75/15 Grabber X3's on standard gearing and its fine. On long hills you have to change down a little earlier but apart from that its fine. They will fit on a standard Jim but mine is on a 2" lift. Actual size will depend on the tire. tread pattern, remould/or new etc. I think mine are around 28"
Allan.
Please Log in or Create an account to join the conversation.
- Mraz
- New Member
-
Public
Less
More
- Thank you received: 0
10 Mar 2018 08:47 - 10 Mar 2018 08:50 #190220
by Mraz
Replied by Mraz on topic Tyre size 195/80/15 or 215/80/15
I'd just go with 195/80s and that's what I will do after I destroy ones I have (215/75s).
Food for thought - 215/75 Kumho MTs on modular rims are 10kg heavier than 215/75 Bridgestone Dueler AT's on original rims (and they are 2-3kg heavier than original 205/70). So there is 50+ kg of rotating mass (arround 30% more weight than original) wich stores whole lot more energy, making acceleration poor and braking poor. Air resistance, rolling friction, internal friction, rotating mass etc.
Point being, for a vehicle as underpowered as Jimny, every kilogram counts ecpecially when it is rotating mass. Few milimeters on height gain is not worth it.
Friend and I measured height of my Jimny on 215/75's and his Patrol on 33's and you know what? Diff height is almost the same. And Jimny has narrower track, shorter wheelbase, better aproach, depart and breakover angles and is much much lighter. I'm NOT saying Jimny is better "off roader" but.. on the same snow covered uphill section he gets stuck I can start, stop, reverse and start again with no problems.
Food for thought - 215/75 Kumho MTs on modular rims are 10kg heavier than 215/75 Bridgestone Dueler AT's on original rims (and they are 2-3kg heavier than original 205/70). So there is 50+ kg of rotating mass (arround 30% more weight than original) wich stores whole lot more energy, making acceleration poor and braking poor. Air resistance, rolling friction, internal friction, rotating mass etc.
Point being, for a vehicle as underpowered as Jimny, every kilogram counts ecpecially when it is rotating mass. Few milimeters on height gain is not worth it.
Friend and I measured height of my Jimny on 215/75's and his Patrol on 33's and you know what? Diff height is almost the same. And Jimny has narrower track, shorter wheelbase, better aproach, depart and breakover angles and is much much lighter. I'm NOT saying Jimny is better "off roader" but.. on the same snow covered uphill section he gets stuck I can start, stop, reverse and start again with no problems.
Last edit: 10 Mar 2018 08:50 by Mraz.
Please Log in or Create an account to join the conversation.
Time to create page: 0.144 seconds