Is the space saver spare wheel "one size fits all"?
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Well, I did the deal on a 530d SE Auto with plenty of options. One of them was the "space saver spare wheel". However, when I checked, the wheel was missing, but the plastic insert containing the jack was in place. It's no problem, as the dealer has promised to put the spare in, prior to me picking it up on Wed.
My question is, is there just one size space saver, regardless of what size wheels are fitted? (this car has 123s which are fitted with 245/40/18 tyres. I would guess so, but just checking. What size tyre is fitted to your space saver wheel?
My question is, is there just one size space saver, regardless of what size wheels are fitted? (this car has 123s which are fitted with 245/40/18 tyres. I would guess so, but just checking. What size tyre is fitted to your space saver wheel?
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Originally Posted by KAF' post='378636' date='Jan 15 2007, 04:39 PM
All the same size
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My Ride: 2005 525i : Alpine White, Steptronic, Black Interior with Amethyst Leather & Popular Grain Brown, 17" 122-Style Rims, Adaptive Bi-Xenon Headlights, Auto Dimming & Folding Mirrors, Advanced A/C, Sports Steering Wheel, Electrically Adjustable Steering Column, Extended Lighting Package, PDC, Sliding Armrest, Bus Navi, Hi-Fi Sound System (MP3 DVDs), CD Changer, Rear Sunshades..
MODS:M-tech front bumper, Painted Grill, Installed Aux-In, Garage Door Opener (Overhead Compartement), ///M Steering wheel, Wood hand brake trim, Wood gear-shift lever. 35% Tint all around..
Got, ACS Roof Spoiler, but not installed..
the spare wheel is only needed for emergency and temporary use... so there will be no high speed driving, all the same size to get you where you need while you fix your wheels... when i use my spare wheel it is actually alot biger than my 17' 122rims...so on the side i put the spare wheel its actually higher than the rest. quite apperent too..
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Originally Posted by the-oneil' post='378640' date='Jan 15 2007, 04:46 PM
so those with 19" alloys will have the same space saving spare as 17" or 18" rims. How will it fit? Am I missing something?
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My Ride: E61 535d Apr 05. UK spec + Media Pack, Luxury Pack & Visibility Pack
Originally Posted by madoon' post='378647' date='Jan 15 2007, 10:06 PM
the spare wheel is only needed for emergency and temporary use... so there will be no high speed driving, all the same size to get you where you need while you fix your wheels... when i use my spare wheel it is actually alot biger than my 17' 122rims...so on the side i put the spare wheel its actually higher than the rest. quite apperent too..
135 x 80% = 108 mm tyre side height
225 x 50% = 113 mm tyre side height (std tyres)
245 x 45% = 110 mm tyre side height (on 122 rims)
all on 17" rims, so actually your "standard" 225/40 tyre is nearly 5 mm higher per side, and the space saver is the "lowest" of the lot (and, in case you are wondering, it's also slightly smaller diameter than the standard 18" wheel, but only by 6mm overall).
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My Ride: Estoril Blue 440i GC
Model Year: 2017
I think that the theory is that the space saver is a "get you home measure", and, as has been said, won't be subject to high speeds or loads. The difference in rolling radius is relatively unimportant - differential wear over a short distance is negligible, and LSD's are not needed with DSC. It will screw up the RPA, but you already know you've had a puncture, right?! The ABS sensors won't be affected, but a large difference may "fool" the DSC into thinking that there is slippage on one wheel, but I would imagine that for that to happen, there would have to be a huge difference.
As I'm typing this, I realise that the rolling radius of a flat runflat is probably quite different from a fully inflated one!
For those of us without space saver's who are thinking of getting one, can anyone confirm that the tyres are 135/80 x 17 please?
As I'm typing this, I realise that the rolling radius of a flat runflat is probably quite different from a fully inflated one!
For those of us without space saver's who are thinking of getting one, can anyone confirm that the tyres are 135/80 x 17 please?
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My Ride: 2005 525i : Alpine White, Steptronic, Black Interior with Amethyst Leather & Popular Grain Brown, 17" 122-Style Rims, Adaptive Bi-Xenon Headlights, Auto Dimming & Folding Mirrors, Advanced A/C, Sports Steering Wheel, Electrically Adjustable Steering Column, Extended Lighting Package, PDC, Sliding Armrest, Bus Navi, Hi-Fi Sound System (MP3 DVDs), CD Changer, Rear Sunshades..
MODS:M-tech front bumper, Painted Grill, Installed Aux-In, Garage Door Opener (Overhead Compartement), ///M Steering wheel, Wood hand brake trim, Wood gear-shift lever. 35% Tint all around..
Got, ACS Roof Spoiler, but not installed..
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My Ride: E61 535d Apr 05. UK spec + Media Pack, Luxury Pack & Visibility Pack
Originally Posted by madoon' post='378904' date='Jan 16 2007, 10:24 AM
the space saver is 135/80 17.... i think my car was higher because on a normal rim... that ride hight is from the edge(side) of the car.. while on the spare it was very much closer to the center of the car, which may have cause that...
heres a pic...
heres a pic...
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My Ride: E61 535d Apr 05. UK spec + Media Pack, Luxury Pack & Visibility Pack
Originally Posted by AlwynMike' post='378703' date='Jan 15 2007, 11:48 PM
I think that the theory is that the space saver is a "get you home measure", and, as has been said, won't be subject to high speeds or loads. The difference in rolling radius is relatively unimportant - differential wear over a short distance is negligible, and LSD's are not needed with DSC. It will screw up the RPA, but you already know you've had a puncture, right?! The ABS sensors won't be affected, but a large difference may "fool" the DSC into thinking that there is slippage on one wheel, but I would imagine that for that to happen, there would have to be a huge difference.
As I'm typing this, I realise that the rolling radius of a flat runflat is probably quite different from a fully inflated one!
For those of us without space saver's who are thinking of getting one, can anyone confirm that the tyres are 135/80 x 17 please?
As I'm typing this, I realise that the rolling radius of a flat runflat is probably quite different from a fully inflated one!
For those of us without space saver's who are thinking of getting one, can anyone confirm that the tyres are 135/80 x 17 please?
The difference in rolling radius IS small (no more than 5 mm with standard tyres/rim combinations; don't know about 19"/20" rims)
Size is 135/80 R 17 on my car.