» Site Navigation | | » Recent Threads | | | 1999 M3 Swap 09-07-2023 10:10 PM 06-01-2024 03:04 PM 7 Replies, 410,070 Views | | My 318ti build 05-21-2024 04:48 PM 05-28-2024 06:42 PM 1 Replies, 3,953 Views | | OMG!OMG! 05-28-2024 08:53 AM 05-28-2024 08:53 AM 0 Replies, 1,653 Views | | | | | 10-26-2005, 02:51 AM | #1 | Senior Member Join Date: Jan 2005 Location: Fort Collins, CO Posts: 1,305 | Tire Size Question...Please Help Hello everyone. I have 17 x 8" rims and they now have 225/40/17 Kuhmos on them. I will have to replace two of them and I wanted to go with 235/40 for out back. I found some real cheap ones on e-bay the other day (like $115 for 2 tires shipped) but I missed out on the auction so now I'm thinking of other ideas. Any ways, I was wondering if anyone was running different sidewall sizes f/r (w/a different width i suppose it would almost even out though) or if anyone had any suggestions on what I should do...ie: would it be better to keep 225's all around or would i really benefit from 235's? fyi: my car is lowered like 1.5" or so thanks in advance for advice | | | 10-26-2005, 03:16 AM | #2 | Senior Member Join Date: Sep 2004 Location: Manassas, VA Posts: 4,129 | Well, if you use different size tires front and rear, you can't rotate them. That's the first problem. I'm running Dunlop Sport 8000 tires 235/45/17 now for my summer wheels. No rubbing feels great. Quote: Originally Posted by PettitWC Hello everyone. I have 17 x 8" rims and they now have 225/40/17 Kuhmos on them. I will have to replace two of them and I wanted to go with 235/40 for out back. I found some real cheap ones on e-bay the other day (like $115 for 2 tires shipped) but I missed out on the auction so now I'm thinking of other ideas. Any ways, I was wondering if anyone was running different sidewall sizes f/r (w/a different width i suppose it would almost even out though) or if anyone had any suggestions on what I should do...ie: would it be better to keep 225's all around or would i really benefit from 235's? fyi: my car is lowered like 1.5" or so thanks in advance for advice | __________________ 1998 (July) 318ti, 5-spd OEM Armrest Blaupunkt Heidelberg CD50 CD Player/Compact Drive MP3 Player Diamond Audio 5.25" rear speakers Navman ICN 530 GPS BMWALARM.COM (with comfort settings) after market alarm system Magnecor 8.5mm wires M-Z3 Shifter/Momo Knob Burlwood Dashboard Stromung Exhaust X-brace Racing Dynamics Front Strut Bar Carbonio C.A.I. 17" Rial Rims Vader Seats/Heated/Lumbar Support M-tech Steering Wheel/Front Sway Bar/Front & Rear Bumper Depos/w 6500K Angel Eyes/6000K HIDs Clear Corners M3 Mirrors UUC Light Weight Flywheel/M5 Clutch/M3 Clutch Slave E28 3.46 LSD/Mcoupe Cover/E30 Flanges & Halfshafts UUC S.S. Brake/Clutch Lines Hartge Roof Spoiler BavAuto Springs Bilstein Sport Struts/Shocks E46 M3 Rear Shock Mounts SPC Front Camber Kit Reiger Hatch Spoiler BavAuto Rear Camber Kit Dinan Stage II Software Turner Rear Sway Bar Reinforcements BMW E46 Auto dimming mirror with Clown Nose alarm Engine Compartment Light Heated Wiper Fluid Retrofit OEM Fire Extinguisher Da'lan Trailer Hitch Rear Sun Shade OEM Fog Light Retrofit H & R MZ3 Rear Sway Bar/ UUC Adjustable End Links Cruise Control Retrofit On Board Computer Retrofit M3 twistie style side skirts Carbon Fiber Hood | | | 10-26-2005, 03:22 AM | #3 | Senior Member Join Date: Aug 2004 Location: state college, pa Posts: 3,431 | Kumhos are usually very competitively priced. I'd try and find a set locally, that way you're getting free mounting / balancing (~$20) and not paying shipping (usually ~$7 / tire). I know that doesn't quite answer your question, but that's my input. __________________ I scream, you scream, we all scream for ZOMBIES. | | | 10-26-2005, 03:28 AM | #4 | Senior Member Join Date: Jan 2005 Location: Fort Collins, CO Posts: 1,305 | thanks guys. I think I will end up going with 225's but the only problem is they're tough to find with a 40 aspect ratio, especially locally. I was thinking about finding some used ones so they would maybe wear out around the same time as the front ones and then i could just go 235/45 all around... | | | 10-26-2005, 03:32 AM | #5 | Senior Member Join Date: Sep 2004 Location: Manassas, VA Posts: 4,129 | I paid $270.00 for (4) used Dunlop Sport 80000's 235/45/17 on Ebay. They had 90% of the tread left. Quote: Originally Posted by PettitWC thanks guys. I think I will end up going with 225's but the only problem is they're tough to find with a 40 aspect ratio, especially locally. I was thinking about finding some used ones so they would maybe wear out around the same time as the front ones and then i could just go 235/45 all around... | __________________ 1998 (July) 318ti, 5-spd OEM Armrest Blaupunkt Heidelberg CD50 CD Player/Compact Drive MP3 Player Diamond Audio 5.25" rear speakers Navman ICN 530 GPS BMWALARM.COM (with comfort settings) after market alarm system Magnecor 8.5mm wires M-Z3 Shifter/Momo Knob Burlwood Dashboard Stromung Exhaust X-brace Racing Dynamics Front Strut Bar Carbonio C.A.I. 17" Rial Rims Vader Seats/Heated/Lumbar Support M-tech Steering Wheel/Front Sway Bar/Front & Rear Bumper Depos/w 6500K Angel Eyes/6000K HIDs Clear Corners M3 Mirrors UUC Light Weight Flywheel/M5 Clutch/M3 Clutch Slave E28 3.46 LSD/Mcoupe Cover/E30 Flanges & Halfshafts UUC S.S. Brake/Clutch Lines Hartge Roof Spoiler BavAuto Springs Bilstein Sport Struts/Shocks E46 M3 Rear Shock Mounts SPC Front Camber Kit Reiger Hatch Spoiler BavAuto Rear Camber Kit Dinan Stage II Software Turner Rear Sway Bar Reinforcements BMW E46 Auto dimming mirror with Clown Nose alarm Engine Compartment Light Heated Wiper Fluid Retrofit OEM Fire Extinguisher Da'lan Trailer Hitch Rear Sun Shade OEM Fog Light Retrofit H & R MZ3 Rear Sway Bar/ UUC Adjustable End Links Cruise Control Retrofit On Board Computer Retrofit M3 twistie style side skirts Carbon Fiber Hood | | | 10-26-2005, 04:17 AM | #6 | Senior Member Join Date: Jan 2005 Location: Fort Collins, CO Posts: 1,305 | Quote: Originally Posted by L84THSKY I paid $270.00 for (4) used Dunlop Sport 80000's 235/45/17 on Ebay. They had 90% of the tread left. | hahahaha, man you and e-bay, but that's where i've been looking so we'll see | | | 10-26-2005, 05:01 AM | #7 | Senior Member Join Date: Aug 2004 Location: state college, pa Posts: 3,431 | I hope you're not buying motorcycle tires that way too. Auto is fine (you've got four), but I wouldn't risk an old production date on a bike. __________________ I scream, you scream, we all scream for ZOMBIES. | | | 10-26-2005, 12:19 PM | #8 | Senior Member Join Date: Sep 2004 Location: Manassas, VA Posts: 4,129 | My motorcycle tires are new, however, I would buy NOS tires to get original "Made in England" Dunlops Quote: Originally Posted by aceyx I hope you're not buying motorcycle tires that way too. Auto is fine (you've got four), but I wouldn't risk an old production date on a bike. | __________________ 1998 (July) 318ti, 5-spd OEM Armrest Blaupunkt Heidelberg CD50 CD Player/Compact Drive MP3 Player Diamond Audio 5.25" rear speakers Navman ICN 530 GPS BMWALARM.COM (with comfort settings) after market alarm system Magnecor 8.5mm wires M-Z3 Shifter/Momo Knob Burlwood Dashboard Stromung Exhaust X-brace Racing Dynamics Front Strut Bar Carbonio C.A.I. 17" Rial Rims Vader Seats/Heated/Lumbar Support M-tech Steering Wheel/Front Sway Bar/Front & Rear Bumper Depos/w 6500K Angel Eyes/6000K HIDs Clear Corners M3 Mirrors UUC Light Weight Flywheel/M5 Clutch/M3 Clutch Slave E28 3.46 LSD/Mcoupe Cover/E30 Flanges & Halfshafts UUC S.S. Brake/Clutch Lines Hartge Roof Spoiler BavAuto Springs Bilstein Sport Struts/Shocks E46 M3 Rear Shock Mounts SPC Front Camber Kit Reiger Hatch Spoiler BavAuto Rear Camber Kit Dinan Stage II Software Turner Rear Sway Bar Reinforcements BMW E46 Auto dimming mirror with Clown Nose alarm Engine Compartment Light Heated Wiper Fluid Retrofit OEM Fire Extinguisher Da'lan Trailer Hitch Rear Sun Shade OEM Fog Light Retrofit H & R MZ3 Rear Sway Bar/ UUC Adjustable End Links Cruise Control Retrofit On Board Computer Retrofit M3 twistie style side skirts Carbon Fiber Hood | | | 10-26-2005, 02:37 PM | #9 | Senior Member Join Date: Apr 2005 Location: Great White North! Posts: 701 | Guys who's been advising you on tire sizes? I'm sorry to have to tell you but you are both runnig the wrong size for your cars. We sell tons of tires at the shop for BMWs and have never seen those sizes on E36s. Here are the sizes that fit an E36 318ti on all four corners: 185/65/15, 205/60/15, 205/55/16, 225/50/16, 215/45/17, 225/45/17, 235/40/17, 225/40/18, 235/35/19 The outside diameter of the tire must always remain within 2% of the o.e. size to avoid gearing problems. The 225/40/17 size is border-line depending on the wheel width, but the 235/35/17 size is definitely the wrong size for an E36 at 3.5% bigger in overall diameter. It is a size for an E34, E39 5 series. I would recommend a 235/40/17 for a wider tread that will put more rubber down, protect the wheels and avoid gearing issues. Cheers, __________________ Engine: 2.1L Hartge conversion (bored to 86X91mm, ported & polished head, new valves, new crank, & upgraded ECU), Supersprint SS headers, Hartge exhaust, custom cat bypass (track), KV85 wires, Bosch platinum plugs, Vitesse cf spark plug cover, Vitesse cf CAI, Samco hoses, Fiamm air horns. Drivetrain: custom ssk, Vitesse adj. clutch stop, Redline D4 ATF & 75W90. Chassis: 18x8.5 Hartge Classics on 225/40/ZR18 Direzza DZ101s, 17x8 Hartge 7 spokes on 235/40/17 Direzza Z1 *specs and 17x9 Enkei MT1-R on 235/40/17 Direzza Z1 *specs(track), Vitesse 10mm spacers with cf/billet hub extenders, Bilstein PSS9 coilovers, Hartge sway bars & strut brace, urethane offset LCABs, Vitesse rsb, billet/urethane RSMs, X-brace, ATE BBK, ATE slotted rr. rotors, Goodridge ss. lines, ATE Superblue. Exterior: Violettschwarz, Hartge lip spoiler, window spoiler, hatch spoiler & mirrors, Vitesse cf door pillars, Vitesse cf fog light blanks (track), ZKW ellipsoids, HIDs in headlights, highbeams and foglights, and much more... Performance BMW Magazine feature car March 2003 www.vitessetuning.com | | | 10-26-2005, 05:08 PM | #10 | Senior Member Join Date: Sep 2004 Location: Manassas, VA Posts: 4,129 | My 235/45/17 tires only offset speed by 2.6% higher than normal. Quote: Originally Posted by H3_2.1-ti Guys who's been advising you on tire sizes? I'm sorry to have to tell you but you are both runnig the wrong size for your cars. We sell tons of tires at the shop for BMWs and have never seen those sizes on E36s. Here are the sizes that fit an E36 318ti on all four corners: 185/65/15, 205/60/15, 205/55/16, 225/50/16, 215/45/17, 225/45/17, 235/40/17, 225/40/18, 235/35/19 The outside diameter of the tire must always remain within 2% of the o.e. size to avoid gearing problems. The 225/40/17 size is border-line depending on the wheel width, but the 235/35/17 size is definitely the wrong size for an E36 at 3.5% bigger in overall diameter. It is a size for an E34, E39 5 series. I would recommend a 235/40/17 for a wider tread that will put more rubber down, protect the wheels and avoid gearing issues. Cheers, | __________________ 1998 (July) 318ti, 5-spd OEM Armrest Blaupunkt Heidelberg CD50 CD Player/Compact Drive MP3 Player Diamond Audio 5.25" rear speakers Navman ICN 530 GPS BMWALARM.COM (with comfort settings) after market alarm system Magnecor 8.5mm wires M-Z3 Shifter/Momo Knob Burlwood Dashboard Stromung Exhaust X-brace Racing Dynamics Front Strut Bar Carbonio C.A.I. 17" Rial Rims Vader Seats/Heated/Lumbar Support M-tech Steering Wheel/Front Sway Bar/Front & Rear Bumper Depos/w 6500K Angel Eyes/6000K HIDs Clear Corners M3 Mirrors UUC Light Weight Flywheel/M5 Clutch/M3 Clutch Slave E28 3.46 LSD/Mcoupe Cover/E30 Flanges & Halfshafts UUC S.S. Brake/Clutch Lines Hartge Roof Spoiler BavAuto Springs Bilstein Sport Struts/Shocks E46 M3 Rear Shock Mounts SPC Front Camber Kit Reiger Hatch Spoiler BavAuto Rear Camber Kit Dinan Stage II Software Turner Rear Sway Bar Reinforcements BMW E46 Auto dimming mirror with Clown Nose alarm Engine Compartment Light Heated Wiper Fluid Retrofit OEM Fire Extinguisher Da'lan Trailer Hitch Rear Sun Shade OEM Fog Light Retrofit H & R MZ3 Rear Sway Bar/ UUC Adjustable End Links Cruise Control Retrofit On Board Computer Retrofit M3 twistie style side skirts Carbon Fiber Hood | | | 11-04-2005, 02:06 AM | #11 | Member Join Date: Jun 2005 Location: Carolina Represent... Posts: 72 | I'm running 225/45 up front with 245/40's in the rear. Those are sitting on 7.5F/8.5R OEM M3 Contour's. But my compact is not yet lowered though. __________________ ///M3 - 323i - 318Ti - Xterra | | | 11-04-2005, 03:27 AM | #12 | Senior Member Join Date: Jul 2004 Location: Florida Posts: 1,595 | I have Z3 Cross Spokes (BBS) with 225/45/17 up front and 245/40/17 in the rear with a 1.25" drop and have Dunlop FM901's, cost me $85 a tire. | | | 11-04-2005, 04:03 AM | #13 | Senior Member Join Date: Oct 2004 Location: Tennessee Posts: 523 | Im running 225/45/16 just had them put on today would that cause any gearing problems? | | | 11-04-2005, 04:16 AM | #14 | aka Stabby Join Date: Nov 2004 Location: Mead, CO Posts: 5,336 | you can calculate the diameter difference (and thus effect on your speedo) using this: http://www.miata.net/garage/tirecalc.html __________________ 1996 318ti, California package, 267k miles current mods: bilstein sports, bavauto springs, e30 m3 LCABs, solid metal ball joints, bavauto RSMs w/reinforcements, e30 3.73 LSD & halfshafts, supersprint cat-back exhaust, turner rear sway bar reinforcements, IE poly subframe & RTABs + camber/toe kits, powdercoated e36 32x front calipers, sport mirrors, H&R 28mmF/19mmR sway bars, x-brace, auto solutions SSK w/poly bushing upgrade, BMW CD43 head unit, DICE HD Radio w/iPod integration and "stealth" HD antenna, staggered style 68s, orange electronic TPMS, leather arm rest, JT Designs metal undertray acquired and awaiting install: heated seat kit, cali top switch relo, lumbar support kit, park distance control kit, heated washer nozzle kit, m-coupe rear subframe, trailing arms, differential, and halfshafts, m-coupe front/rear brakes with master cylinder, under hood light kit, mud flaps, rear sun blind, auto-dimming rear view mirror, tilt steering wheel retrofit, apexcone 5000K HIDs with 55W ballasts 2002 X5 4.4 Sport Package, 53.5k miles Current Mods: e46 m3 steering wheel | | | | Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | | Posting Rules | You may not post new threads You may not post replies You may not post attachments You may not edit your posts HTML code is Off | | | |