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 Posted: Sat Nov 20, 2010 10:22 am |
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Joined: Feb 07, 2010
Posts: 177
Trade Rating: +1
Location: Llantrisant
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I need a new set of tyres and im looking for a set of 195 55 15 are £330
But for the same make tyres but size 195 50 15 are £198
Thats saving me £132 thats alot of cash
Is it ok to reduce the profile size by 5? or will i have problems?
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| GT Dturbo
Team : Austin Healey Sprite | |
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Posted: Sat Nov 20, 2010 10:25 am |
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Joined: Feb 07, 2010
Posts: 7209
Trade Rating: +14
Location: Stevenage
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Yes that would be fine I have done the same, speedo will be about 4mph out but its not a problem.
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Posted: Sat Nov 20, 2010 10:26 am |
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Joined: Feb 07, 2010
Posts: 1681
Trade Rating: +5
Location: Carlisle
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No problems if your gettin all 4 and are they the same make and everything? Seams like a he'll of a hike in price lol
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| Image removed due to size
Team, ST
Team, Gti 138 track slag | |
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Posted: Sat Nov 20, 2010 10:26 am |
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Joined: Feb 07, 2010
Posts: 3666
Trade Rating: +59
Location: Scotland
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As Mikey said, knocks the speedo out ever so slightly but saves a small fortune!
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| '98 Nile Blue 306 GTi 6
'04 Obsidian Black 206 GTi 138 | |
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Posted: Sat Nov 20, 2010 10:29 am |
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Joined: Feb 07, 2010
Posts: 177
Trade Rating: +1
Location: Llantrisant
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Was talking to a guy a while ago and he was saying that the 55 profile is quite 'rare' as alot use the 50 and thats why tyres are cheaper, i was just not sure what difference it would do
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| GT Dturbo
Team : Austin Healey Sprite | |
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Posted: Sat Nov 20, 2010 10:30 am |
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Joined: Mar 14, 2010
Posts: 376
Trade Rating: +3
Location: Shropshire
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can you get your speedo re-calibrated or anything?
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Posted: Sat Nov 20, 2010 10:30 am |
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Joined: Feb 07, 2010
Posts: 1031
Trade Rating: +7
Location: UK - North
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i've been using 195/50's for over three years with no problem.
my 206 originally had 175/65/14's on. in my case, the 50's are actually closer to the overall circumference than 55's so affects my speedo less.
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| Former owner of a 1.4 HDi for six years | |
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Posted: Sat Nov 20, 2010 10:38 am |
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Joined: Feb 07, 2010
Posts: 1681
Trade Rating: +5
Location: Carlisle
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You don't need to calibrate the speedo youl bearly notice anything And all speedos are out anyway 
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| Image removed due to size
Team, ST
Team, Gti 138 track slag | |
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Posted: Sat Nov 20, 2010 10:40 am |
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Joined: Mar 14, 2010
Posts: 376
Trade Rating: +3
Location: Shropshire
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| Shaw-pug wrote: |
| You don't need to calibrate the speedo youl bearly notice anything And all speedos are out anyway |
So you have no excuse for speeding or something I heard?
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Posted: Sat Nov 20, 2010 10:48 am |
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Joined: Oct 07, 2010
Posts: 83
Trade Rating: 0
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When you change from 55 to 50 you will reduce the sidewall height by about 1cm.
This will reduce the rolling radius of the tyre by about 10cm.
Therefore the speedo will be 3.3% less than indicated.
IE when your speedo reads 30 you will actually be doing 29
when it reads 60 you will actually be doing 58
Maybe a slightly stiffer ride quality.......apart from that no problem.....
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Posted: Sat Nov 20, 2010 11:01 am |
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Joined: Feb 08, 2010
Posts: 7045
Trade Rating: +5
Location: In the garage
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Will accelerate quicker too!
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| 2001 GTi 138, Bilstein Sprint dampers, H&R springs, 21mm Peugeot Sport torsion bars, 22mm rear ARB, Peugeot Sport Group A wishbones, 283mm discs, Goodridge stainless hoses, Maniflow 304 grade 4-2-1 2.5" manifold and system, 200 cell cat, Richard Longman head, 45mm Jenvey throttle bodies, 9.5mm TB spacers, 90mm air horns, Jenvey throttle linkage, Jenvey fuel rail, Aeromotive and Goodridge fuel fittings and braided hose, ITG sausage filter, Radtec custom radiator, Piper Ultimate Road cams, Piper vernier pulleys, Omex 600 ECU. Saxo electric PAS pump, Vibra Technics engine mounts. Samco coolant hoses, TTV steel flywheel, 4.76 final drive ratio, 307 CC 180 ratios. 2019 BMW 530i. 2017 Mercedes C300 convertible. | |
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Posted: Sat Nov 20, 2010 11:40 am |
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Joined: Feb 07, 2010
Posts: 177
Trade Rating: +1
Location: Llantrisant
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cool new set of rubber then before the snow comes in
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| GT Dturbo
Team : Austin Healey Sprite | |
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Posted: Sat Nov 20, 2010 12:15 pm |
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Joined: Feb 07, 2010
Posts: 629
Trade Rating: +3
Location: Birmingham
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195 50 15 for me too....i didnt know that profile set your speedo out but meh. its a slightly stiff ride compared to the steels i was on before
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Posted: Tue Dec 14, 2010 3:57 am |
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Joined: Feb 14, 2010
Posts: 516
Trade Rating: 0
Location: Newcastle / Plymouth
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Alright all, im glad i found this thread as have also been wondering about fitting 50s instead of 55s.
Slight evolution to the question as I already have 2x Pirelli P6000 195 55 15s but need 2 new tyres - so can I get 50's and run them ok with 55s? (obviously paired per axle)
If so, which is best to have up front?
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Posted: Tue Dec 14, 2010 4:02 am |
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Joined: Sep 05, 2010
Posts: 461
Trade Rating: 0
Location: Somerset
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Apart from a minor change to the speedo reading you will notice a slightly 'firmer' ride as the shallower tyre absorbs less of the bumps in the road.
Note...... use a sat nav, or similar, to check the speedo against the accurate sat nav reading
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| 1.4 hdi, 206, Year..2003, 100,000 miles
Mercedes, ML270CDI, 2002, 200,000 miles
BMW K1200RS | |
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