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D2 - Wheels and Tyres Refurbing, center caps, tyre brands, tyrefitters - discuss it here |
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#1
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Quick tyre question
I have 9J 275 35 20 tyres on my car at the moment, will I be able to fit 285 30 20 wheels on to the alloys okay?
Also out of interest what's the max tyre that could go on, any help would be appreciated as I want to order my new tyres today.
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2009 Audi RS 6 Saloon V10 - 420mm Ceramics, Keyless, Soft Close, Adaptive Cruise, Glass Sunroof, Blinds, Twin Pane & UV, Freeview & DAB, High Beam Assist, MTM bits, Audi Exclusive Bits, MRC, Milltek, GYEF1 ASY2's, Bluetooth streaming music to AMI mod - 753 PS/1021 NM 2016 Audi S3 Saloon, Sepang, S-Tronic - B&O, Tech Pack etc... Company Car 1995 Audi A8 4.2 V8 quattro Sport - Bose, Solar, Blinds |
#2
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hi Amar
use the following website to tell you what the effect will be http://www.kouki.co.uk/utilities/vis...ize-calculator I think you will be over 3% out on your old size on overall diameter which will affect your speedo reading. its more important if youve got staggered set up like me to make the back and the front get near enough that the quattro doesnt misinterpret the difference as wheel spin but if you are doing all 4 then you should be ok. Your overall rolling radius will be slightly smaller so your speedo will read faster than you are actually doing. BUT with a 9" width wheel they recommend the minimum tyre width to be 235mm, the ideal to be 245 or 355mm, and the maximum to be 265mm so as you have 275mm you are already over the recommended maximum and shouldnt go wider still HTH Cheers Neil
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Confidence is the feeling you have before you know better . . . . Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange 2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee 20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble Audi A8L D2 4.2 Petrol with LPG - Ebony Black Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior and some other A8's A8L's and Mercs Last edited by Architex_mA8tey; 10th May 2010 at 02:45 PM. |
#3
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Thanks Neil, that site is quite helpful. I upgraded from 245 45 18 so I am actually going to be getting more accurate speedo reading by going to a 30 profile over 35. I may try 285..
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2009 Audi RS 6 Saloon V10 - 420mm Ceramics, Keyless, Soft Close, Adaptive Cruise, Glass Sunroof, Blinds, Twin Pane & UV, Freeview & DAB, High Beam Assist, MTM bits, Audi Exclusive Bits, MRC, Milltek, GYEF1 ASY2's, Bluetooth streaming music to AMI mod - 753 PS/1021 NM 2016 Audi S3 Saloon, Sepang, S-Tronic - B&O, Tech Pack etc... Company Car 1995 Audi A8 4.2 V8 quattro Sport - Bose, Solar, Blinds |
#4
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The corret wheel and tyre combination should give a rolling radius of 2129.06 mm
Therefore with a standard 18" whell the tyre is 245/45 18 for a 19" wheel it is 245/40 19 for a rolling radius of 2131.88 (0.13% difference) for a 20" wheel 245/35 20 gives 2134.71 (0.27% difference) Once you start playing around with cross sections and tyre width it's just a case of keeping as close to stock as possible to not cause any speedometer errors (a potential MOT fail) However, most speedos read high so they don't fall foul of the construction and use regs with regard to accuracy. A speedometer mat read upto 10% high but may not have any error reading low. manufactures also use this to 'demonstate how economical' your car is. You think your doing 70 and realy your doing 64.......... Your wheel tyre combination is about max for a D2 on the front. the rolling radius is 2200.68 about 3.36% oversize and probably on the limit of your speedo error. When your speedo says you are doing 70 you may be doing 72.35. However if you speedo is reading high in the first bplace you have just corrected it with the tyre size! Check it against a satnav for accuracy. The tyres you have (275) are designed for a 9" - 11.5" wheel. A 285/30 20 will need a 9.5" wheel minimum and I think you'll have rubbing issues at the front. At the back you should be able to get an 11" wheel with a proper offset of about 35. I have a 10" rear to go on with an ofset of 55 and i will use 15 or 20mm spacers to make it sit right. If you want a staggerd set up then to maintain rolling radius parity front to back the 245/35 20 fronts match 285/30 20 rears running on 8.5 - 9.5 wheels front and 9.5 to 11 rears. 265/30 20 and 315/25 30 also match; but will cause your speedo to read high (show 70 when you are doing 68. If you can find them well done. If you can afford them, buy a D3 S8 and stop wasting money on tyres for a D2!!!!!
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Conan (the Librarian) Watch it if you dare Currently, 2000 S8, Merlin Purple, Leather Pack 1, Winter Pack 1, SPAX adjustable suspension, AP Racing 6 pot front caliper, 385mm fully floating disks, EBC Yellow Stuff Pads, Black Diamond grooved rear disks and predetor pads, D2 Doctors Brake Block. 1997 4.2 A8SQ - the Projekt. 12 years and ongoing! 1997 4.2 A8SQ - Ming Blue. Restoration sat waiting; saved from the Scrapyard 2003 C5 Allroad 4.2Q - Cobolt Blue. Towing car. Laid up awaiting manual conversion. 2005 C5 Allroad 2.5TDi FE - Grey - Workhorse. 2015 Q3QS SLine - Daytona Grey. Lots of extras! Long Haired Admirals cutter. Previously 2003 C5 A6 1.9TDI FWD - Loaner from D2 Doctor Lifex 1997 S8 - Ming Blue. Loaned out and written off. I loved that car. My first engine swap after cambelt failure. 1996 4.2 A8SQ - Ming Blue. 178k on a cambelt! Trader's 8. Delivered to A8Parts at Lifex. 2003 2.8 A8SQ - powder blueish. Fill in for a while. Sold on. 1998 1.8T A4 Avant FWD. Ming Blue (there's a theme here), PEX for the 97 S8. And a list of non VAG going back 40 years before I saw the light. |
#5
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oh and what he said too !!! ^^^^^^
__________________
Confidence is the feeling you have before you know better . . . . Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange 2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee 20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble Audi A8L D2 4.2 Petrol with LPG - Ebony Black Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior and some other A8's A8L's and Mercs |
#6
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Thanks for your post Mike, well my alloys are from a D3 so does that count? I have just ordered some 285 30 20 Michelin PS2 tyres, they are meant to be the best. Saw your post a little late. Fingers crossed they fit if not my girlfriends dad has 285 30 20 tyres on the rear of his car so will give them to him.
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2009 Audi RS 6 Saloon V10 - 420mm Ceramics, Keyless, Soft Close, Adaptive Cruise, Glass Sunroof, Blinds, Twin Pane & UV, Freeview & DAB, High Beam Assist, MTM bits, Audi Exclusive Bits, MRC, Milltek, GYEF1 ASY2's, Bluetooth streaming music to AMI mod - 753 PS/1021 NM 2016 Audi S3 Saloon, Sepang, S-Tronic - B&O, Tech Pack etc... Company Car 1995 Audi A8 4.2 V8 quattro Sport - Bose, Solar, Blinds Last edited by Singh; 10th May 2010 at 03:02 PM. |
#7
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I could be wrong maybe my wheel is 9.5J why would Audi mount 275 35 20 tyres to a 9J tyre if the maximuim recommended is 265mm, sureley the millions they spend on development would have flagged that up. Does anyone know what tyre size the D3 alloys are
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2009 Audi RS 6 Saloon V10 - 420mm Ceramics, Keyless, Soft Close, Adaptive Cruise, Glass Sunroof, Blinds, Twin Pane & UV, Freeview & DAB, High Beam Assist, MTM bits, Audi Exclusive Bits, MRC, Milltek, GYEF1 ASY2's, Bluetooth streaming music to AMI mod - 753 PS/1021 NM 2016 Audi S3 Saloon, Sepang, S-Tronic - B&O, Tech Pack etc... Company Car 1995 Audi A8 4.2 V8 quattro Sport - Bose, Solar, Blinds |
#8
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if it's 9.5J that would make more sense Amar as the max tyre size recommended is then 275mm, which is what youve got currently
__________________
Confidence is the feeling you have before you know better . . . . Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange 2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee 20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble Audi A8L D2 4.2 Petrol with LPG - Ebony Black Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior and some other A8's A8L's and Mercs |
#9
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Nope, just found out its 9J. But the C5 RS6s boys fit 275 tyres on their 9J wheels and they come standard with 255. I think it should be okay, if it rubs at the front I will add some spacers. At £295 each they better be a good tyre. All four Verdistans at the moment are bald, dad nearly killed me when he saw them so had to order some asap, doubt they have 1mm on them.
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2009 Audi RS 6 Saloon V10 - 420mm Ceramics, Keyless, Soft Close, Adaptive Cruise, Glass Sunroof, Blinds, Twin Pane & UV, Freeview & DAB, High Beam Assist, MTM bits, Audi Exclusive Bits, MRC, Milltek, GYEF1 ASY2's, Bluetooth streaming music to AMI mod - 753 PS/1021 NM 2016 Audi S3 Saloon, Sepang, S-Tronic - B&O, Tech Pack etc... Company Car 1995 Audi A8 4.2 V8 quattro Sport - Bose, Solar, Blinds |
#10
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lol that must have been James doing donuts when he tried out your car the other day
__________________
Confidence is the feeling you have before you know better . . . . Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange 2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee 20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble Audi A8L D2 4.2 Petrol with LPG - Ebony Black Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior and some other A8's A8L's and Mercs |
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