can you install gr corolla suspension and brakes on a priusBozi Tatarevic examines the compatibility of GR Corolla strut assemblies and calipers with a Prius Prime, analyzing mounting points, dimensions, and tolerances. The process involves test-fitting the hardware to check for interference and measuring ride height changes.TTAC Creator Bozidar "Bozi" Tatarević is a Bosnian-American racing mechanic, writer, and technical consultant born in Sarajevo in 1986. After immigrating to the U.S. in 1995, he learned English in elementary school and eventually turned his passion for cars - fostered by his father Slav - into a full-time career. Laid off from a tech job in 2008, Bozi began wrenching professionally, eventually launching a shop and car export business with his family. His technical message board posts led to a writing career with outlets like TTAC, Motorsport.com, Road & Track and Racecar Engineering.In 2018, he made his pro mechanic debut at Watkins Glen and now works as a tire carrier and mechanic for Vasser Sullivan Racing in IMSA, with 10 wins and a 2023 GTD Pro title. Bozi also consults via his agency Podium Prime, with clients ranging from race teams to media production companies.AdvertisementAdvertisementEd. Note: this podcast initially ran several months ago, so it's been moved so that those who missed it the first time get a chance to see it.The TTAC Creators Series tells stories and amplifies creators from all corners of the car world, including culture, dealerships, collections, modified builds and more.Below is an AI-generated summary of the video transcript, which has been edited by a staffer.[Images: YouTube thumbnail]Become a TTAC insider. Get the latest news, features, TTAC takes, and everything else that gets to the truth about cars first by subscribing to our newsletter.SummaryThis transcript documents an experiment to determine whether Toyota GR Corolla suspension and brakes can be installed on a Toyota Prius Prime. The creator carefully measures components, performs a test installation, and concludes that the swap is surprisingly compatible, opening the door for future performance upgrades. AdvertisementAdvertisementThe project begins by comparing the factory Prius Prime front strut to a low-mileage GR Corolla strut assembly. Initial visual inspection reveals nearly identical dimensions, with only minor differences in the spring perch design and sway bar end-link mounting location. Careful measurements confirm that the mounting flanges, bolt spacing, and top mount dimensions are almost identical, suggesting the components may interchange. GR Corolla Suspension Test FitThe GR Corolla strut is installed on the Prius Prime to verify compatibility.Key findings include:The upper strut mount bolts directly into the Prius chassis.The steering knuckle aligns perfectly with the mounting points.Factory bolts fit without modification.Brake line and wheel-speed sensor brackets also attach correctly.The sway bar link location differs slightly but is not expected to significantly affect handling.Wheel clearance is adequate, with no interference after installation.AdvertisementAdvertisementThe creator credits Toyota's extensive parts commonality for making the swap so straightforward. Suspension HeightAfter allowing the suspension to settle, measurements show the GR Corolla strut raises the Prius slightly compared to its existing lowering springs, leaving a larger fender gap. The creator concludes that aftermarket lowering springs designed for the GR Corolla would likely restore the desired ride height while retaining the upgraded hardware. Brake Upgrade EvaluationAttention then shifts to fitting GR Corolla four-piston front brake calipers using a Yaris RC rally adapter bracket.AdvertisementAdvertisementThe goals are to:Retain the Prius's factory-sized brake rotors.Avoid increasing unsprung weight with larger rotors.Reduce weight by approximately four pounds per front corner thanks to the lighter fixed calipers.Improve braking performance for spirited driving while remaining compatible with the Prius Prime's regenerative braking system.The creator has already sourced custom performance brake pads but postpones the full conversion until researching the Prius's brake-by-wire system, bleeding procedures, and electronic calibration requirements. Brake Test ResultsThe brake hardware proves equally successful:AdvertisementAdvertisementThe adapter bracket positions the GR Corolla caliper perfectly on the factory Prius rotor.The wheels clear the larger calipers with room to spare.Mechanically, everything fits exactly as intended.The remaining work is software-related, ensuring the Prius's electronic brake systems function correctly after the upgrade. Final ConclusionsAfter reinstalling the original Prius suspension for comparison, the creator analyzes ride-height measurements and concludes:The stock GR Corolla strut and spring combination produces approximately the same ride height as a stock Prius Prime.The swap appears fully feasible from a mechanical standpoint.Future plans include pairing the GR Corolla struts with aftermarket lowering springs to achieve the preferred stance while benefiting from the sportier suspension design.AdvertisementAdvertisementOverall, the experiment demonstrates an unexpectedly high degree of compatibility between the GR Corolla and Prius Prime front suspension and brake components, making the upgrade a promising option for enthusiasts seeking improved handling and braking performance.
+19 others
