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205 75 r15 will they fit?

  • jimny dave
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08 Nov 2015 21:54 #155774 by jimny dave
205 75 r15 will they fit? was created by jimny dave
Looking at getting some General Grabber AT. I have an absolutely bog stock standard 2010 Jimny. Will the size fit...
205 75 r15

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08 Nov 2015 23:11 #155779 by Halford
Replied by Halford on topic 205 75 r15 will they fit?
yes on std jimny will be no problem

some have issues when using wheel spacers, yet others don't - but easy fix

you'll love these tyres, so much better

;)
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08 Nov 2015 23:28 #155780 by jimny dave
Replied by jimny dave on topic 205 75 r15 will they fit?
cheers for the reply. Hopefully get them ordered tomorrow evening then get them fitted when they arrive. Don't do much off roading-although I'd love to do it all the time. Ive read that the grabbers At are meant to be really good so thought As an all rounder they'd be good and hopefully in the snow, bit of mud and wet they'll be much better.

Dave.

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09 Nov 2015 00:14 #155781 by wombat
Replied by wombat on topic 205 75 r15 will they fit?
Just fitted 205/75/15 grabbers to my 2008, no problems at all, well impressed with the tyres with better grip on road and tried them today on a muddy track and well impressed :)

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09 Nov 2015 06:44 #155783 by Daniel30
Replied by Daniel30 on topic 205 75 r15 will they fit?
Yes quite a few of us run grabbers and are very pleased with them can't fault mine
File Attachment:

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09 Nov 2015 07:09 #155784 by fozzie
Replied by fozzie on topic 205 75 r15 will they fit?
Just fitted Grabbers to my Jim.

Best thing I've done to the car so far. Totally changed the road grip and the whole feel of the car. It now has suspension!

Go ahead and get them, you won't be disappointed, especially if your current tyres are old and worn.

I was very skeptical that new Grabbers (or new tyres in general) would be so much better than the half worn (but age hardened) tyres they were replacing. It's a different car!

2012 Jimny Black. Totally standard (except for rear seat removal mod).
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09 Nov 2015 11:33 #155795 by jimny dave
Replied by jimny dave on topic 205 75 r15 will they fit?
Cheers guys! Exactly the responses I was hoping for. I am also very happy with the fact the car will be better we on the road with them :) can't wait now!

Dave.

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10 Nov 2015 16:01 - 10 Nov 2015 16:10 #155901 by Bosanek
Replied by Bosanek on topic 205 75 r15 will they fit?
I researched a lot about larger tyre sizes on a Jimny. I read british, australian, south african and even german forums.

What I discovered is that the best "sensible" upgrade is to 205/75/R15 size, just like the others have recommended. You essentially get approx 10 mm of extra ground clearance, more macho looking tyres, and stronger tyres when it comes to hitting potholes (less chance of tyres developing wobbles).
Gearing does change, but the general consensus is that it is hardly noticeable, if at all. The same goes for fuel consumption.
The only possible issue might be if you have front mudflaps (read below). It is easy to sort out.

EDIT: According to south african forums, Suzuki's dealerships over there officially allow up to 3% of change in wheel diameter. Size 205/75/R15 is 3,1% larger than 205/70/R15, so it is officially supported over there (according to forum claims over there).

If you go any larger, like 195/80 or 215/75, you start an endeavor into a "murky" zone - you might get tyres scrubbing onto the wheel arches, front mudflaps or especially front bumper if you have a 2nd gen (2006-2012) bumper, and also the overall gearing changes so much that it noticeably affects car's road manners (acceleration performance, speedometer and tachometer accuracy, uphill pulling power and downhill braking power etc.). The fuel consumption is also affected.

If you go to the extreme, like 215/80 or 235/75, then you are entering a red light district without a cheap way out - you have to lift the car up, trim the wheel arches, install wheel spacers, change the transfer box, raise a new loan at the bank ....
Not to mention the additional wear and tear on the transmission, drivetrain, suspension, steering, and wheel hub assemblies. Also, get ready to visit the gas stations more often than you anticipated.




I am also currently in the process of ordering myself new tyres in that size 205/75/R15, and I chose Goodyear Wrangler AT/SA+, as I have had superb experience with them in any terrain and in any time of year (my current ones are the same, just on the stock size 205/70/R15).

I measured and determined that my new tyres will probably catch on the main screw on my factory mudflaps, so tomorrow I am going to preventively disassemble the mudflaps, shorten the plastic spacer behind the mud flaps by approx 10 mm and then reinstall everything.

Please make some pictures of your new tyres when you install them, with the wheels pointing straight, and please also with the wheels in one full steering wheel turn to either side. I have determined that the clearance is the smallest not on full lock, but on one full wheel turn (half lock) to either side.


P.S.:
Daniel30,
it appears that you have some wheel spacers installed, or not? Those tyres on the picture look like they are very wide or protruding from the wheel arch.
Last edit: 10 Nov 2015 16:10 by Bosanek.
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10 Nov 2015 16:15 #155903 by fozzie
Replied by fozzie on topic 205 75 r15 will they fit?
Daniel's Jim has new wheels with a 30mm offset B)

2012 Jimny Black. Totally standard (except for rear seat removal mod).

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10 Nov 2015 16:47 #155908 by Daniel30
Replied by Daniel30 on topic 205 75 r15 will they fit?
Yeah fozzie is correct I have -30 offset wheels 205/75/15 grabbers I'm very pleased with the set up

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10 Nov 2015 17:04 #155913 by jimny dave
Replied by jimny dave on topic 205 75 r15 will they fit?
Bosanek, thank you for such a long and detailed reply; that is very interesting what you read. I am pleased to learn I'm gaining a whole 10mm of clearance too lol ;):) I shall get pictures on asap.

cheers ,

JD

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11 Nov 2015 08:12 - 11 Nov 2015 08:38 #155961 by Bosanek
Replied by Bosanek on topic 205 75 r15 will they fit?
I'm glad to help with my findings.

Another issue which is often overlooked is the question of the 5th spare tyre.

Whichever non-stock tyre size gets installed, the spare tyre size will no longer be the same.


The proper solution would be to purchase all five new tyres instead of four, and to replace the spare tyre with the new non-stock size. Rich guys usually do that, especially if they are using flashy AT or MT tyres, and they install the same spare tyre (without a cover of course), to make the best impression.

However, there are three issues with this solution:
  1. A larger spare tyre might not fit on the back door because of interference with the back bumper (depends on tyre size). In other words, the indent on the top of the back bumper might not be large enough to accept a larger tyre. The solution for that is to buy a spare tyre wheel spacer from JimnyBits, product code "sws".
  2. A larger tyre is heavier, and that means additional stress on the back door hinges.
  3. The original spare wheel cover probably will not fit over a larger tyre.


The "cheap" solution is to simply continue carrying your stock size spare tyre. That means that your 5th tyre is smaller than the other four. Below are the consequences of that decision:

I've been told that the tyre size discrepancy will not do any harm to the vehicle if you use the spare tyre on the front axle, and only in 2WD mode, becuase the front wheels are disconnected from the entire transmission in 2WD mode. So, if one of your rear wheels gets punctured, the procedure would be to remove the punctured rear wheel, remove one good front wheel, install that front wheel in the place of the punctured rear wheel, and then install the spare wheel in the place of the removed front wheel. Yeah, a lot of job if it's raining or night time.

But what if you get a puncture in the middle of offroading where you need 4WD to get to civilization?

I've been told that, in theory, the tyre size discrepancy on one wheel should not do harm as long as 4WD is used on rather slippery ground (snow, mud, very loose gravel), as one wheel will have to CONTINUOUSLY "underslip" in order to compensate for the discrepancy. Only very slippery ground can enable that.
The driver must pay strict attention to disengage 4WD immediately as soon as a patch relatively solid ground is reached, and then engage 4WD again if difficult portion is encountered, and disengage as soon as he passes through it, and so on. The spare wheel should always be installed on the front axle, because of the last portion of the journey where 2WD will be used.

All this sounds ok and manageable, except in the situation of rather rocky or bumpy DRY road, where you usually need to use 4WD-L 1st gear to pass slowly. Because the road is DRY and rather solid, there is not enough chance for the transmission to relieve itself of the continuous discrepancy (for a wheel to continuously underslip), and damage is possible.
Therefore, if you have to use a smaller spare tyre on a dry rocky or bumpy road, it might be better to use 2WD 1st gear instead of 4WD-L 1st gear.
That means you have to go through faster, or drive "improperly" by riding the clutch and/or the brakes. It's driver's decision whether to risk the damage to the suspension done by going faster through rocks and bumps, or to the clutch if riding it, or on the other hand, to risk damage to the transmission in 4WD-L mode.
Last edit: 11 Nov 2015 08:38 by Bosanek.
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