| Author | Message | ||
| mike Vettraino (348tb)
New member Username: 348tb Post Number: 8 Registered: 2-2003 |
575 barchetta wheels they will fit on 348? Thanks. | ||
| mark richards (Theneed4speed)
New member Username: Theneed4speed Post Number: 23 Registered: 8-2002 |
Thank you all very much for helping me on this subject  jjjust one little thing,Will 285,35,18 fit the rear(10-18")or is that a little wide The reason is appart from having some already, they will almost remain the same size as the std348 wheels as in diameter(only 4 mm taller than std 348s) | ||
| Rob Schermerhorn (Rexrcr)
Member Username: Rexrcr Post Number: 357 Registered: 11-2002 |
Mark, reducing rotational mass (decreased inertial mass) is always a good thing. You'll put more power to the ground effectivley (doesn't make more power, just less mass to accelerate) and there is an effective increase in bump damping on the shocks. Turn-in will be more responsive. This is why Ferrari went to magnesium on the OEM F355 wheels. | ||
| mark richards (Theneed4speed)
New member Username: Theneed4speed Post Number: 20 Registered: 8-2002 |
i have bought the wheels ,just need to get them referb ,cant wait to get them on,they seem a lot lighter than the other ones will they make any differance to the performance | ||
| Christopher McCormick (92_348ts)
Junior Member Username: 92_348ts Post Number: 99 Registered: 6-2002 |
Mark-They are 275/35/18's on the rear and 225/40/18's on the rear. They both come out perfectly flush with the rims, however you could go with a wider tire and still look good. | ||
| Justin Randall Kenyon (Kenyon)
Junior Member Username: Kenyon Post Number: 188 Registered: 10-2002 |
The car you are taking about was for sale in Germany at www.mobile.de. It has 11X19 ON THE FRONT AND 13X19 ON THE REAR. The car was a 1990TB | ||
| mark richards (Theneed4speed)
New member Username: Theneed4speed Post Number: 19 Registered: 8-2002 |
looks good justin,looking threw the archive,there`s a black 348 with huge dished pollished wheels on and with 355 doors and r/grill on is it anyone from here wonderd what wheels they are could be 19" | ||
| Justin Randall Kenyon (Kenyon)
Junior Member Username: Kenyon Post Number: 185 Registered: 10-2002 |
 | ||
| Rob Schermerhorn (Rexrcr)
Member Username: Rexrcr Post Number: 313 Registered: 11-2002 |
If you suspect cracks, you must find a crack test facility that is certified by the FAA. Magnesium is more brittle than aluminum. A genuine crack near the rim may break when mounting a tire. Unfortunatly, you have to strip the wheels to test properly, but it's worth the peace of mind. Highly recommended. I do this every 2 - 3 years for race cars. | ||
| mark richards (Theneed4speed)
New member Username: Theneed4speed Post Number: 18 Registered: 8-2002 |
christopher nice car looking good are you running 265/40/18 or 275/35/18 on the rear the guy im buying the wheels from ,last night he let me take one to try on ,,fitted ok even with the standard lug bolts,i was hopeing they would stick out more so i gues i will have to space them out.my only concern is that he has 4sets of wheels and half of them have hairline cracks in the back of the rim ,(were the tyre seals against the rim)are they rearly that dellicate or has he abused them ,but the rims are not curbed or in bad shape!the asking price for these rims is �160 per wheel but they need repainting | ||
| BretM (Bretm)
Advanced Member Username: Bretm Post Number: 3242 Registered: 2-2001 |
I never realized how good the Challenge rims look with nice paint and the cavallino in the middle. Very cool. Usually when rims come in on cars they are kind of beat up, painted weird colors, etc. I bet a set of them in silver or black would look pretty good on the 308... | ||
| Christopher McCormick (92_348ts)
Junior Member Username: 92_348ts Post Number: 98 Registered: 6-2002 |
I'm happy with mine....   | ||
| Noelrp (Noelrp)
Junior Member Username: Noelrp Post Number: 196 Registered: 8-2001 |
The diameter & width of my wheels are 18x10 & 18x8. | ||
| mike Vettraino (348tb)
New member Username: 348tb Post Number: 5 Registered: 2-2003 |
Bob!!!!!!!! You post:front and rear offset60mm .80mmrespectively. My Q= for with size wheels? 18x wath?- PS: from my knowledge these wheels were made in a lot of different sizes if we all talk about the same wheels (CH18") for 348 and 355.This were also made in 17s" Noelrp. your post:35mm front 65mm rear >wath size wheels? 18Xwath I hope i made my point!!!!!!! | ||
| Rob Schermerhorn (Rexrcr)
Member Username: Rexrcr Post Number: 305 Registered: 11-2002 |
Front and rear offset: 60mm, 80mm respectively. | ||
| Noelrp (Noelrp)
Junior Member Username: Noelrp Post Number: 195 Registered: 8-2001 |
The weight of the front is 12 lbs & rear 18 lbs. The offset I believe is 35mm front & 65mm rear. The offset should be stamped on the outer spoke of the wheel near the stud. | ||
| Byron (Bmyth)
Member Username: Bmyth Post Number: 374 Registered: 10-2002 |
Rob, thanks for the info... do you have specs for the actual weights and offset for my wheels? Mark, as Rob mentioned, it might be because mine are from the 348 CH v. the 355 CH you are considering (a little thinner). I don't have spacers on my car, but I know that I have a Series Speciale rear transaxle... this might have an impact on the look of the car (wider stance). If you are looking for spacers, there are many guys on Fchat that use Koenig spacers (up to 30mm on each side) that have had good luck with them. I personally don't mind the wheels not being flush... as I always think to myself... that's how it was raced... there's no reason to think wider is always better! Good luck on the wheels. If the price is right, you should get them... then get them powder-coated to whatever color you like...white, black, gunmetal, yellow.... make sure you find someone with Speedline stickers so that you can duplicate a set of new stickers... I don't believe they make them anymore. | ||
| Dennis (Bighead)
New member Username: Bighead Post Number: 28 Registered: 2-2003 |
Rob, thanks for the valuable information -- I feel better knowing that my Challenge wheels are strong enough for street use. Did the all 348 Challenges retain stock lug bolts? All of the 355 Challenges I've seen have been converted to a stud-and-lug-nut setup. thx, --Dennis | ||
| Justin Randall Kenyon (Kenyon)
Junior Member Username: Kenyon Post Number: 182 Registered: 10-2002 |
Hey, 360 wheels will fit 348's and 355's  | ||
| Rob Schermerhorn (Rexrcr)
Member Username: Rexrcr Post Number: 299 Registered: 11-2002 |
Challenge wheels were supplied in two slightly different designs. The critical dimensions are the same, dia, offset, width. The only way to see the difference is to have them sitting next to each other. One's spokes are slightly flatter than the later design. Also, Speedline makes wider wheels not Challenge legal, that look the same. Other than this appearance difference, there is no difference IME between 348 and 355 Challenge wheels. Competitors interchanged them or kept them when upgrading to 355 chassis, and Ferrari supplied the same wheel during 1995 - 1999. As for street legalities, that's a disclaimer, they are safe. BTW, the OEM F355 wheels are magnesium too. | ||
| Phil Good (Feelnotbad)
New member Username: Feelnotbad Post Number: 10 Registered: 1-2003 |
I checked on my 92 348ts. With the stock lug bolts, the thread left on stock wheels is exactly the same as with the 355 Challenge wheels. Inside the Challenge wheels, there is a sticker mentioning that they are not street legal. | ||
| mark richards (Theneed4speed)
New member Username: Theneed4speed Post Number: 17 Registered: 8-2002 |
also does anyone no what these wheels are worth second hand,average conditon,no tyres in the uk | ||
| mark richards (Theneed4speed)
New member Username: Theneed4speed Post Number: 16 Registered: 8-2002 |
bryon your wheels look slightly differnt or may be coz there black,do you have spacers on them im hopeing that the guy will let me test fit one before i buy ARE MAGNESIUM WHEELS OK FOR THE STREET? I MAY BUY THESE WHEELS TODAY | ||
| Byron (Bmyth)
Member Username: Bmyth Post Number: 371 Registered: 10-2002 |
what's the key difference between the speedline wheels for F355 challenge and 348 challenge cars? I have speedlines on my 348 challenge left over from the challenge series - are they different in size/wt/offset? | ||
| Rob Schermerhorn (Rexrcr)
Member Username: Rexrcr Post Number: 298 Registered: 11-2002 |
Dennis, I don�t doubt what you discovered with your car, but, the way I remember it, the 355 magnesium Speedline was actually first offered in 1995 while we were still running the 348's in Challenge and only Peter Sachs was campaigning a 355 with Miller MC in the US. The 348 Challenge still used the OEM bolts. I don�t have a car in front of me, but I can check tomorrow as my friend maintains the Land Shark 348 Challenge of Col. Kurt Carlson. Soooo, my memory says no problems with the bolts, but I�ll get the info ASAP. | ||
| Noelrp (Noelrp)
Junior Member Username: Noelrp Post Number: 193 Registered: 8-2001 |
Awesome website Dennis. I may order a set of spacers/bolts for the rear. Thanks! | ||
| Dennis (Bighead)
New member Username: Bighead Post Number: 27 Registered: 2-2003 |
Mark, with all due respect to Noel, *** you may very well need to replace your lug bolts!!! I use these same 355 Challenge Speedline magnesium racing wheels on my 355 (for track use only, as they are too fragile for street use). I've used them with my stock lug bolts at a few events without any problems. BUT we just discovered that when using Speedline Challenge wheels on a 355, the stock bolts aren't long enough for the wheel -- there is only a 1/4" of thread holding the bolt on (!), instead of the 1/2" for the stock street wheels. Doh. It's because the hub of the Challenge wheels are thicker than the stock wheel. I don't know if this is true for the 348 as well, but PLEASE CHECK -- it only takes a minute with a caliper. Actual 355 Challenge cars use a stud/nut solution. I presume that the longer lug bolts used with late-offset 348 wheels would work without replacement. But if you have an earlier 348, you'll need to replace all 20 lug bolts, and even later model 348s will need 10 for the fronts. Ferrari charges roughly $70 APIECE for the longer lug bolt. I think not! Thanks to some guys on the FerrariList, I found a great alternative source. H&R, which makes spacers too, has lug bolts that will work. http://www.ecstuning.com/HR/appguides/app_search.cgi?make=Ferrari&qt=studbolt&model=F355&submit=Search%21&thread=Choose+Thread http://www.ecstuning.com/HR/support/how_to_mesure.html I ordered a set of new H&R lug bolts (HR141560FER, 60mm, M14x1.5 ) from ECS, for $4.95 apiece (plus shipping), in lieu of the ~$70 or so that Ferrari charges PER BOLT. Prestige wheel also sells bolts that look as if they'll work, but they are $8.97 apiece. Part# 20-4316-C 14mm 1.50 RH Dacromet 60mm Shank 83mm Overall. http://www.prestigewheel.com/Image204211c.asp The Tire Rack (www.tirerack.com) also came highly recommended, but I lucked out with ECS and so didn't get around to checking with them. Lastly, one 355 driver mentioned that FoW shaved her Challenge rims enough so that her stock bolts would work. According to our measurements on my stock and Challenge wheels, we needed about 1/4" of additional length on the bolt. Overall, consider getting a set of replacement bolts -- $100 is cheap insurance, even by my penny pinching standards. Of course, 1/4" of thread may work just fine on the street, but better safe than sorry.... vty, --Dennis | ||
| mike Vettraino (348tb)
New member Username: 348tb Post Number: 4 Registered: 2-2003 |
Is possible to use 8.5x18 front and 11x18 rear on a 348 , speedline corse ch wheels and with max size of tires can be fitted? any one. Thanks. | ||
| Jeff B. (Miltonian)
Junior Member Username: Miltonian Post Number: 150 Registered: 12-2002 |
Wow, Phil....looking GOOD!!! | ||
| Phil Good (Feelnotbad)
New member Username: Feelnotbad Post Number: 9 Registered: 1-2003 |
Non issue. No need for longer bolts.  | ||
| Noelrp (Noelrp)
Junior Member Username: Noelrp Post Number: 192 Registered: 8-2001 |
I have 265/40/18 rears & 225/40/18 fronts. It is a conservative setup and I am very happy with it. The rear track will increase slightly probably 1/4 inch, hardly noticable. I've heard others installing taller/wider tires. | ||
| mark richards (Theneed4speed)
New member Username: Theneed4speed Post Number: 15 Registered: 8-2002 |
o you no what size tire the challange wheels ran Will they increase the rear width of the car.mine has no spacers on and is an early 93 car thanks noel cheers mark | ||
| Noelrp (Noelrp)
Junior Member Username: Noelrp Post Number: 191 Registered: 8-2001 |
Yes, they will fit with no problem at all. No need to replace the lugbolts(unless you have a spyder - if so you'll need shorter lugbolts for the rear). -noel | ||
| mark richards (Theneed4speed)
New member Username: Theneed4speed Post Number: 14 Registered: 8-2002 |
has anyone fitted 355 chalange wheels on a348? do they fit and whould you need longer bolts. and will the wheels give it a wider track due to a differant offset. i think the challenge wheels are 8-18 front 10-18 rear can anyone shed any light on this subject... mark |