Professor_Zoot

Thank you for your insightful comments. I have been using 235/35 tires on 7.5J rims for the past four years, despite their deviation from ETRTO (European Tyre and Rim Technical Organisation) specifications. Over this period, I have not observed any detrimental effects on performance, wear, or longevity. It is worth noting, however, that my driving habits tend to be more restrained these days - I do not engage in track sessions or aggressive driving scenarios that might expose potential limitations of this setup. Looking ahead, I plan to upgrade to 8.5J rims later this year or early next, allowing ample time to conduct further research. Regards PZ

Thank you kindly for the helpful information. Regards PZ

Yes, I believe they are (7.5J ET51) for the Xtreme 19". For 245/35, I would need 8.5J ET45, according to the web app, which makes the spoke side protrude approximately 17mm further out and the strut side move about 7mm further in (which is certainly feasible—though I'm unsure about full compression). Based on JT2's experience, this setup fits well within his geometry. With the added height and a few millimetres of spoke-side protrusion, it seems manageable. Regards PZ

I don’t think pursuing the staggered route is a viable option based on the feedback so far, and to be honest, I’m fine with that—it was just an idea. However, I’d like to explore the 245 options further. Looking at JonnyType2’s setup (that is seriously slammed—fair play!), along with his comment about using a 20mm spacer on top, it seems promising. Given that I’m not planning to lower mine any time soon, I don’t see why, with the increased track and correct offset, this wouldn’t be feasible. I will do some actual measurements and CAD it up to be sure of course. Currently run 235/35 R19's for the last few years and completely fine. A better choice imo. Many thanks to all who have commented, by the way, it is very much appreciated and informative. Regards PZ

Thanks for the replies guys much appreciated. The 255 rear was only for visual appearance as they look a little skinny imo. I didn't consider insurance if going to 245 so great point made. Will check that out. Not planning to do this until later in the year so plenty of time to do some measuring and checking. From what you guys have mentioned max 245 all round sounds the most viable. Many thanks Regards PZ

Hi all, New to forum so I hope this finds you all well. Currently I have 235/35 R19' on standard xtreme alloys which I think suit the wheel size better. They certainly give a better feel/confidence on braking and spirited driving from my perspective. I have had a good search on previous posts but can't find much on going wider on the tyre profile. A fair few going smaller from 19's to 18's due to our lovely roads and potholes in the uk but little on wider tyres for 19's. What I would ultimately like rightly or wrongly hence my question is 245/35 R19 on 8.5J up front with E45 offset (I can live with a few -% which would correct my current speedo to GPS speed). On the rear 255/30-35 R19 on 9J with E50 offset. This would give me approx 20mm positive spoke side 7mm front / 20mm rear suspension side. I was just wondering if anyone knew or had any experience with wheel/tyre of this size? Many thanks in advance for any thoughts or knowledge. Kind Regards PZ